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2003 National Survey on Drug Use & Health:  Detailed Tables

40618

Table  4.1C Standard Errors of Numbers (in Thousands) of Persons Who First Used Marijuana in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 100 62 79 0.5 3.0 4.0
1966 88 47 72 0.5 2.2 3.4
1967 108 62 91 0.4 2.9 4.3
1968 136 78 108 0.3 3.6 4.8
1969 157 76 137 0.3 3.5 6.3
1970 151 91 119 0.2 4.2 5.8
1971 145 84 120 0.3 3.8 5.8
1972 140 93 103 0.3 4.1 4.8
1973 148 92 113 0.3 4.2 5.7
1974 140 96 100 0.3 4.6 4.6
1975 144 99 106 0.3 4.9 5.1
1976 142 99 96 0.4 5.0 4.8
1977 144 101 101 0.4 5.1 4.6
1978 137 104 89 0.4 5.5 4.8
1979 135 94 95 0.4 5.0 4.5
1980 121 88 81 0.4 4.6 4.4
1981 115 84 83 0.4 4.9 4.9
1982 112 81 79 0.5 4.6 4.1
1983 114 88 70 0.3 4.7 4.3
1984 100 75 65 0.4 4.2 3.7
1985 110 87 64 0.4 5.1 3.7
1986 99 76 67 0.3 4.3 4.0
1987 88 69 56 0.4 4.1 3.9
1988 92 69 54 0.7 4.2 3.3
1989 87 63 62 0.4 3.8 3.9
1990 79 54 59 0.6 3.2 3.3
1991 86 59 64 0.4 3.4 3.8
1992 93 61 65 0.3 3.5 4.1
1993 83 53 63 0.4 3.0 3.8
1994 81 51 62 0.3 2.7 3.9
1995 84 44 72 0.2 2.3 4.4
1996 71 46 51 0.2 2.3 3.1
1997 76 47 58 0.2 2.3 3.1
1998 65 47 45 0.3 2.3 2.7
1999 68 44 48 0.2 2.1 2.9
2000 67 49 41 0.2 2.4 2.4
2001 61 41 44 0.2 2.0 2.3
20022 82 59 57 0.3 3.0 3.2
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.2C Standard Errors of Numbers (in Thousands) of Persons Who First Used Cocaine in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 25 * 23 * * *
1966 15 * 14 * * *
1967 45 * 45 * * *
1968 51 32 40 1.2 1.4 1.7
1969 39 17 35 1.6 0.7 1.2
1970 49 23 44 0.4 1.0 1.7
1971 63 22 59 0.8 0.9 2.1
1972 56 25 49 0.6 1.0 1.9
1973 71 33 62 0.6 1.4 2.1
1974 92 32 84 0.7 1.3 2.2
1975 79 33 71 0.5 1.3 2.1
1976 87 35 79 0.4 1.4 2.6
1977 81 38 73 0.6 1.6 2.1
1978 95 37 87 0.4 1.6 2.6
1979 91 43 81 0.3 1.9 2.6
1980 103 42 95 0.5 1.9 2.6
1981 89 39 82 0.3 1.9 2.7
1982 89 36 81 0.4 1.7 2.3
1983 94 33 88 0.4 1.6 3.0
1984 84 37 78 0.4 1.8 2.3
1985 82 35 75 0.5 1.7 2.4
1986 77 31 73 0.5 1.6 2.2
1987 79 37 73 0.5 1.9 2.3
1988 79 28 71 0.6 1.5 2.4
1989 68 23 65 0.4 1.2 2.2
1990 70 29 66 0.6 1.6 1.9
1991 55 24 50 0.6 1.3 1.7
1992 70 31 60 0.9 1.6 1.7
1993 50 20 46 0.5 1.0 1.5
1994 53 13 53 0.6 0.6 1.9
1995 55 17 51 0.4 0.8 1.9
1996 56 19 55 0.8 0.9 1.7
1997 48 18 44 0.4 0.8 1.7
1998 48 17 45 0.4 0.7 1.5
1999 46 17 42 0.4 0.7 1.2
2000 49 18 44 0.5 0.7 1.3
2001 52 21 47 0.5 0.8 1.1
20022 57 26 51 0.4 1.1 1.4
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.3C Standard Errors of Numbers (in Thousands) of Persons Who First Used Crack in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 * * * * * *
1966 * * * * * *
1967 * * * * * *
1968 * * * * * *
1969 * * * * * *
1970 * * * * * *
1971 * * * * * *
1972 * * * * * *
1973 13 * * * * *
1974 * * * * * *
1975 * * * * * *
1976 * * * * * *
1977 17 * 14 0.8 * 0.4
1978 30 * 28 1.2 * 0.7
1979 23 * 23 1.5 * 0.6
1980 32 * 25 1.5 * 0.5
1981 32 * 31 1.0 * 0.8
1982 34 * 31 1.3 * 0.6
1983 32 9 31 1.6 0.4 0.6
1984 39 11 37 1.0 0.5 0.9
1985 55 16 54 1.3 0.8 1.1
1986 36 13 33 1.4 0.7 0.8
1987 38 14 33 0.9 0.7 0.9
1988 45 12 43 1.0 0.6 0.9
1989 44 5 43 0.5 0.3 1.2
1990 53 9 52 0.9 0.5 1.0
1991 45 14 41 0.8 0.7 0.9
1992 49 11 48 1.0 0.6 0.9
1993 41 10 40 1.3 0.5 0.8
1994 43 10 42 0.9 0.5 1.0
1995 44 8 43 1.1 0.3 0.9
1996 41 9 40 0.9 0.4 0.9
1997 40 9 39 1.1 0.4 0.9
1998 37 10 34 0.7 0.4 0.9
1999 36 9 35 0.8 0.4 0.8
2000 36 11 34 1.0 0.4 0.6
2001 28 9 27 1.2 0.4 0.4
20022 42 12 40 0.9 0.5 0.8
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.4C Standard Errors of Numbers (in Thousands) of Persons Who First Used Heroin in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 * * * * * *
1966 * * * * * *
1967 22 * * * * *
1968 34 * * 0.7 * *
1969 15 * 14 1.0 * 0.6
1970 36 17 * 3.5 0.7 *
1971 26 9 25 0.7 0.4 0.9
1972 30 7 29 0.9 0.3 1.0
1973 41 12 42 1.0 0.5 1.3
1974 41 * 35 0.7 * 1.2
1975 18 * 16 1.4 * 0.5
1976 21 * 20 1.4 * 0.5
1977 26 3 26 1.0 0.1 0.7
1978 21 * 18 1.2 * 0.6
1979 19 8 17 1.1 0.3 0.5
1980 22 * 18 1.0 * 0.5
1981 28 8 26 0.7 0.3 0.8
1982 16 * 16 1.0 * 0.4
1983 26 * 26 1.5 * 0.6
1984 24 * 21 1.3 * 0.4
1985 11 * 11 1.0 * 0.2
1986 23 * 17 1.3 * 0.5
1987 21 * 21 1.3 * 0.5
1988 16 * 16 1.2 * 0.5
1989 23 * 22 1.3 * 0.6
1990 17 * 17 1.5 * *
1991 24 * 24 1.5 * 0.5
1992 19 4 19 1.5 0.2 0.4
1993 17 3 16 1.3 0.1 0.3
1994 19 5 18 1.7 0.3 *
1995 25 9 23 1.3 0.4 0.3
1996 22 5 22 1.1 0.2 0.6
1997 19 6 18 1.7 0.3 0.4
1998 23 5 22 0.9 0.2 0.5
1999 20 6 18 1.7 0.3 0.4
2000 13 7 11 0.6 0.3 0.3
2001 18 6 18 1.3 0.2 0.4
20022 22 6 21 1.1 0.2 0.4
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.5C Standard Errors of Numbers (in Thousands) of Persons Who First Used Hallucinogens in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 32 * 31 0.8 * 1.6
1966 36 23 28 2.9 1.1 0.9
1967 54 37 40 0.8 1.7 1.6
1968 58 42 40 1.2 1.8 1.5
1969 84 45 71 0.4 2.0 2.8
1970 85 45 72 0.3 1.9 3.0
1971 90 49 74 0.4 2.1 3.0
1972 81 60 53 0.3 2.6 2.2
1973 72 45 56 0.3 1.9 2.2
1974 75 44 56 0.4 1.8 2.0
1975 73 51 54 0.3 2.2 2.0
1976 71 46 55 0.3 2.0 2.0
1977 74 48 54 0.3 2.1 2.0
1978 70 49 51 0.3 2.2 2.0
1979 78 51 56 0.3 2.3 1.9
1980 73 49 55 0.3 2.3 2.0
1981 76 44 60 0.4 2.2 2.0
1982 77 41 64 0.8 2.0 1.9
1983 58 37 47 0.4 1.8 1.6
1984 67 39 54 0.5 1.9 1.9
1985 60 36 46 0.3 1.8 1.7
1986 63 38 47 0.4 1.9 1.6
1987 59 41 39 0.5 2.1 1.5
1988 62 38 49 0.4 2.0 1.8
1989 58 34 47 0.3 1.8 1.8
1990 57 33 48 0.4 1.8 1.7
1991 54 35 41 0.4 1.9 1.5
1992 56 38 41 0.4 1.9 1.5
1993 51 30 42 0.4 1.5 1.6
1994 55 26 47 0.2 1.3 1.9
1995 49 25 42 0.2 1.2 1.7
1996 55 24 47 0.7 1.1 1.8
1997 52 24 44 0.4 1.1 1.8
1998 50 24 44 0.3 1.0 1.6
1999 54 27 44 0.2 1.1 1.7
2000 52 30 42 0.2 1.3 1.5
2001 57 26 50 0.3 1.1 1.5
20022 52 32 47 0.4 1.3 1.5
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.6C Standard Errors of Numbers (in Thousands) of Persons Who First Used LSD in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 15 * 13 * * 0.7
1966 31 20 24 4.2 1.0 0.6
1967 38 24 29 1.1 1.1 1.1
1968 59 47 35 0.7 2.2 1.3
1969 75 39 68 0.6 1.7 2.7
1970 86 45 68 0.3 1.9 2.8
1971 74 37 65 0.5 1.6 2.4
1972 83 56 57 0.3 2.4 2.2
1973 75 45 61 0.5 1.9 2.2
1974 69 43 50 0.3 1.8 1.9
1975 63 42 46 0.4 1.8 1.5
1976 55 36 40 0.3 1.5 1.4
1977 69 46 52 0.4 2.0 1.9
1978 57 37 41 0.3 1.6 1.5
1979 65 47 48 0.4 2.1 1.5
1980 70 47 54 0.3 2.2 1.9
1981 67 41 51 0.4 2.0 1.6
1982 64 38 49 0.7 1.8 1.4
1983 52 34 39 0.3 1.7 1.4
1984 55 31 46 0.7 1.5 1.5
1985 50 33 38 0.6 1.6 1.2
1986 44 29 34 0.4 1.5 1.2
1987 50 38 32 0.4 1.9 1.1
1988 55 38 39 0.3 2.0 1.4
1989 49 31 40 0.4 1.6 1.4
1990 49 32 36 0.5 1.7 1.3
1991 51 34 37 0.3 1.8 1.4
1992 50 35 40 0.3 1.8 1.5
1993 43 23 35 0.3 1.2 1.3
1994 51 27 42 0.3 1.4 1.6
1995 44 23 37 0.2 1.1 1.5
1996 48 22 41 0.3 1.0 1.7
1997 40 21 32 0.3 0.9 1.3
1998 37 22 28 0.2 1.0 1.1
1999 34 21 26 0.2 0.9 0.9
2000 39 22 33 0.2 0.9 1.2
2001 30 19 22 0.2 0.8 0.8
20022 23 17 15 0.2 0.7 0.6
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.7C Standard Errors of Numbers (in Thousands) of Persons Who First Used PCP in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 * * * * * *
1966 * * * * * *
1967 * * * * * *
1968 * * * * * *
1969 22 15 * 1.7 0.7 *
1970 41 21 35 0.7 0.9 1.3
1971 39 24 30 0.6 1.0 1.1
1972 55 37 41 1.1 1.5 1.1
1973 45 25 34 0.4 1.0 1.2
1974 53 34 37 0.4 1.4 1.2
1975 47 36 35 0.5 1.5 1.1
1976 52 34 39 0.7 1.4 1.1
1977 48 29 40 0.5 1.2 1.2
1978 47 26 41 0.8 1.1 1.1
1979 40 25 30 0.5 1.1 1.0
1980 44 27 35 0.9 1.2 0.9
1981 38 19 33 0.7 0.9 1.0
1982 35 16 31 0.7 0.8 0.9
1983 29 19 22 0.5 0.9 0.7
1984 26 10 24 0.5 0.5 0.8
1985 24 14 19 0.7 0.7 0.6
1986 29 13 25 0.9 0.6 0.8
1987 25 18 18 1.1 0.9 0.6
1988 21 14 18 1.4 0.8 0.5
1989 22 14 17 0.9 0.8 0.5
1990 18 13 13 2.2 0.7 0.3
1991 20 12 16 1.8 0.6 0.4
1992 23 8 21 0.5 0.4 0.8
1993 13 7 11 1.5 0.4 0.2
1994 17 12 11 0.3 0.6 0.4
1995 24 8 23 0.6 0.4 0.8
1996 20 9 17 0.8 0.4 0.5
1997 16 8 14 0.4 0.3 0.5
1998 14 10 9 0.5 0.4 0.3
1999 19 11 16 0.6 0.4 0.6
2000 14 11 8 0.2 0.4 0.3
2001 16 11 13 0.5 0.4 0.4
20022 16 12 10 0.3 0.5 0.4
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.8C Standard Errors of Numbers (in Thousands) of Persons Who First Used Ecstasy in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 * * * * * *
1966 * * * * * *
1967 * * * * * *
1968 * * * * * *
1969 * * * * * *
1970 * * * * * *
1971 * * * * * *
1972 * * * * * *
1973 * * * * * *
1974 * * * * * *
1975 * * * * * *
1976 23 * 22 1.4 * *
1977 * * * * * *
1978 * * * * * *
1979 14 * 14 2.0 * 0.3
1980 14 * 12 2.8 * *
1981 13 * 13 * * 0.4
1982 11 * * * * *
1983 27 * 25 3.2 * 0.5
1984 26 * 26 2.0 * 0.5
1985 24 7 23 0.7 0.4 0.6
1986 26 10 24 0.8 0.5 0.7
1987 29 9 27 1.2 0.5 0.8
1988 36 17 31 1.4 0.9 0.8
1989 33 13 30 1.1 0.7 0.8
1990 35 10 33 0.9 0.5 0.8
1991 29 9 27 0.9 0.4 0.8
1992 32 9 31 0.8 0.5 0.8
1993 32 10 29 1.0 0.5 0.9
1994 31 12 29 0.9 0.6 0.8
1995 41 10 39 0.8 0.5 1.3
1996 44 11 42 1.9 0.5 1.0
1997 49 12 47 0.7 0.5 1.5
1998 57 14 55 0.3 0.6 1.5
1999 58 20 53 0.3 0.8 1.5
2000 66 25 60 0.4 1.1 1.5
2001 66 24 62 0.4 1.0 1.4
20022 63 27 59 0.8 1.1 1.3
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.9C Standard Errors of Numbers (in Thousands) of Persons Who First Used Inhalants in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 24 24 * 0.4 1.2 *
1966 44 40 17 0.8 1.8 *
1967 32 24 22 1.8 1.0 0.7
1968 48 34 35 1.5 1.5 *
1969 43 34 26 0.6 1.5 1.1
1970 44 35 27 0.6 1.3 1.1
1971 42 33 26 0.4 1.4 1.0
1972 50 39 31 1.1 1.6 0.9
1973 54 30 43 1.2 1.3 1.1
1974 52 31 43 0.7 1.2 1.4
1975 55 40 35 0.5 1.6 1.2
1976 65 44 49 0.5 1.9 1.5
1977 77 40 63 0.5 1.7 1.9
1978 59 41 43 0.4 1.8 1.4
1979 72 51 52 0.4 2.3 1.5
1980 62 45 40 0.8 2.1 1.1
1981 53 35 40 0.4 1.7 1.2
1982 49 35 37 0.6 1.6 1.0
1983 57 44 34 0.7 2.1 0.9
1984 52 38 35 0.6 1.8 1.1
1985 50 35 37 0.8 1.8 1.0
1986 55 40 37 0.8 1.9 1.0
1987 54 38 35 0.6 1.9 1.1
1988 52 38 34 0.4 1.9 1.2
1989 47 30 35 0.9 1.6 1.4
1990 43 29 31 0.4 1.5 1.1
1991 44 32 28 0.6 1.7 0.9
1992 48 35 32 0.3 1.8 1.2
1993 43 26 34 0.5 1.3 1.1
1994 35 25 25 0.3 1.2 0.9
1995 39 21 31 0.3 1.0 1.1
1996 36 20 30 0.4 0.9 1.0
1997 36 22 27 0.3 0.9 1.1
1998 40 24 30 0.6 1.0 1.0
1999 37 26 27 0.3 1.0 0.9
2000 43 29 28 0.4 1.1 0.7
2001 37 29 22 0.2 1.2 0.8
20022 48 41 25 0.3 1.7 0.9
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.10C Standard Errors of Numbers (in Thousands) of Persons Who First Used Pain Relievers Nonmedically in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 36 19 * * * *
1966 17 * * 5.5 * *
1967 27 * 18 2.9 * 0.7
1968 57 33 46 0.9 1.5 2.0
1969 51 33 37 0.8 1.4 1.2
1970 55 29 47 1.7 1.0 1.6
1971 60 34 47 0.9 1.5 1.4
1972 48 25 40 1.0 1.0 1.3
1973 58 30 48 0.8 1.2 1.4
1974 63 29 56 0.8 1.2 1.6
1975 59 32 49 1.0 1.3 1.3
1976 54 30 44 0.7 1.3 1.3
1977 63 24 55 0.6 1.0 1.7
1978 57 35 43 0.7 1.5 1.2
1979 50 34 37 0.9 1.5 1.0
1980 55 26 47 1.1 1.1 0.9
1981 50 25 43 0.7 1.2 1.1
1982 43 28 37 1.4 1.2 0.9
1983 71 34 62 0.7 1.6 1.6
1984 55 18 52 1.5 0.9 1.1
1985 58 22 52 1.0 1.1 1.2
1986 59 18 57 1.0 0.9 1.4
1987 62 24 58 1.1 1.2 1.3
1988 55 21 51 0.8 1.1 1.3
1989 61 25 56 0.9 1.3 1.4
1990 55 18 52 0.8 0.9 1.4
1991 53 25 48 0.9 1.3 1.2
1992 63 21 60 0.8 1.1 1.3
1993 56 22 47 0.6 1.1 1.5
1994 63 18 61 0.6 0.8 1.4
1995 54 17 52 0.6 0.8 1.5
1996 61 20 58 0.4 0.9 2.0
1997 64 24 60 0.5 1.0 1.7
1998 72 26 68 0.8 1.1 1.5
1999 76 28 69 0.7 1.2 1.6
2000 85 33 77 0.6 1.4 1.9
2001 71 36 64 0.4 1.5 1.4
20022 105 48 93 0.8 2.1 1.9
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.11C Standard Errors of Numbers (in Thousands) of Persons Who First Used Tranquilizers Nonmedically in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 27 * 21 1.2 * *
1966 40 * * 3.0 * *
1967 36 * 35 2.3 * 1.2
1968 33 11 31 1.0 0.5 1.2
1969 42 23 37 1.0 1.0 1.3
1970 41 25 31 0.9 1.1 1.1
1971 39 24 29 0.7 1.0 1.0
1972 55 29 47 0.8 1.2 1.4
1973 63 30 58 1.0 1.2 1.6
1974 52 37 37 0.5 1.5 1.2
1975 59 30 50 0.7 1.2 1.5
1976 58 36 44 0.6 1.5 1.3
1977 58 32 46 0.9 1.3 1.2
1978 52 25 45 1.2 1.1 1.1
1979 52 31 40 0.8 1.4 1.0
1980 41 23 35 0.6 1.1 1.0
1981 48 24 41 0.8 1.1 1.2
1982 47 20 42 0.8 0.9 1.1
1983 48 15 46 0.8 0.6 1.3
1984 51 18 47 1.0 0.9 1.1
1985 52 20 48 1.3 1.0 1.0
1986 48 17 45 2.1 0.9 1.0
1987 45 13 44 0.8 0.6 1.0
1988 58 15 56 1.1 0.8 1.2
1989 45 16 43 0.9 0.9 1.1
1990 45 19 41 1.1 1.0 1.0
1991 46 17 43 1.2 0.9 0.9
1992 50 14 48 1.7 0.7 0.9
1993 58 18 55 1.8 0.9 1.1
1994 41 10 41 1.0 0.5 1.0
1995 51 13 49 1.0 0.6 1.0
1996 45 13 43 0.6 0.6 1.3
1997 42 13 39 0.8 0.6 1.0
1998 59 19 55 0.9 0.8 1.2
1999 50 19 46 0.7 0.8 1.0
2000 73 20 71 0.8 0.9 1.3
2001 57 22 51 0.6 0.9 1.0
20022 76 27 70 0.9 1.1 1.5
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.12C Standard Errors of Numbers (in Thousands) of Persons Who First Used Stimulants Nonmedically in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 54 * 45 1.7 * 1.6
1966 44 19 40 0.7 0.9 1.9
1967 45 27 36 1.1 1.3 1.5
1968 65 34 54 0.4 1.6 2.3
1969 59 38 48 0.4 1.7 2.0
1970 74 41 62 0.5 1.8 2.4
1971 77 35 67 0.5 1.5 2.5
1972 62 36 51 0.5 1.5 1.8
1973 63 34 53 0.6 1.4 1.7
1974 52 30 42 0.4 1.3 1.6
1975 58 35 46 0.5 1.4 1.5
1976 62 37 48 0.8 1.6 1.5
1977 59 43 42 0.3 1.8 1.4
1978 59 34 45 0.4 1.5 1.5
1979 60 36 47 0.3 1.6 1.6
1980 62 36 48 0.3 1.7 1.6
1981 63 31 52 0.6 1.5 1.4
1982 60 37 42 0.5 1.7 1.3
1983 56 27 49 0.6 1.3 1.3
1984 50 28 38 0.7 1.4 1.1
1985 43 23 36 0.5 1.1 1.0
1986 41 23 33 0.5 1.2 1.1
1987 51 28 40 0.7 1.4 1.1
1988 43 28 32 0.5 1.4 1.1
1989 42 19 37 0.5 1.0 1.2
1990 44 26 33 0.8 1.3 1.0
1991 36 17 32 0.8 0.9 1.0
1992 35 21 27 1.0 1.1 0.7
1993 45 18 39 0.5 0.9 1.3
1994 39 16 35 0.7 0.8 1.1
1995 41 16 38 0.7 0.7 1.2
1996 48 17 44 0.6 0.7 1.4
1997 39 18 35 0.7 0.8 0.9
1998 40 19 36 0.6 0.8 0.9
1999 41 19 36 0.6 0.8 0.8
2000 43 19 40 0.6 0.8 1.0
2001 37 22 28 0.3 0.9 0.8
20022 56 25 49 0.9 1.0 0.9
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.13C Standard Errors of Numbers (in Thousands) of Persons Who First Used Methamphetamines Nonmedically in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 21 * * * * *
1966 30 * 25 1.1 * 1.2
1967 32 17 * 1.1 0.8 *
1968 41 23 34 0.4 1.0 1.4
1969 56 38 41 0.5 1.7 1.7
1970 49 26 42 0.6 1.1 1.6
1971 73 31 65 0.5 1.3 2.4
1972 41 26 33 0.3 1.1 1.2
1973 57 28 50 0.7 1.2 1.5
1974 44 25 37 0.5 1.1 1.3
1975 46 29 37 0.5 1.2 1.3
1976 45 30 33 0.8 1.3 1.0
1977 53 37 35 0.5 1.6 1.1
1978 40 22 30 0.5 1.0 1.0
1979 57 39 41 0.3 1.7 1.3
1980 43 28 30 0.4 1.3 0.9
1981 46 25 39 0.6 1.2 1.0
1982 46 26 37 0.4 1.2 1.2
1983 47 22 41 0.7 1.1 1.1
1984 42 26 31 0.4 1.3 0.9
1985 36 20 31 0.7 1.0 0.9
1986 40 21 33 0.6 1.1 1.1
1987 47 24 37 0.7 1.2 0.9
1988 36 19 30 0.7 1.0 1.0
1989 36 16 32 0.6 0.8 1.1
1990 33 15 29 0.7 0.8 0.9
1991 34 14 31 0.7 0.7 1.0
1992 30 18 23 0.8 0.9 0.6
1993 43 18 38 0.7 0.9 1.2
1994 33 12 31 0.6 0.6 1.0
1995 35 13 33 0.7 0.6 1.0
1996 36 14 33 0.7 0.6 1.1
1997 26 12 24 0.5 0.5 0.8
1998 31 15 27 0.8 0.6 0.6
1999 26 11 24 0.7 0.5 0.6
2000 23 12 20 0.6 0.5 0.5
2001 24 14 19 0.4 0.6 0.6
20022 43 16 39 1.1 0.6 0.5
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.14C Standard Errors of Numbers (in Thousands) of Persons Who First Used Sedatives Nonmedically in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 19 18 * * * *
1966 21 * 19 1.8 * 0.7
1967 41 19 34 1.1 0.9 1.5
1968 47 30 36 1.0 1.4 1.5
1969 57 45 36 1.4 2.0 1.2
1970 47 34 33 0.6 1.5 1.2
1971 61 37 49 0.9 1.6 1.5
1972 49 29 39 0.4 1.2 1.5
1973 56 40 40 0.6 1.6 1.4
1974 63 36 52 0.4 1.5 1.8
1975 59 31 50 0.8 1.3 1.6
1976 50 39 31 0.4 1.6 1.0
1977 60 30 53 0.4 1.3 1.6
1978 54 38 40 1.0 1.7 0.8
1979 52 32 40 0.6 1.4 1.2
1980 46 26 37 0.6 1.2 1.1
1981 48 21 41 1.5 1.0 0.9
1982 48 26 39 1.8 1.3 0.8
1983 39 16 36 0.7 0.8 1.1
1984 31 13 28 0.9 0.6 0.8
1985 26 16 21 1.4 0.8 0.5
1986 19 * 15 1.9 * 0.4
1987 29 * 28 1.9 * 0.4
1988 23 * 22 1.1 * 0.4
1989 20 9 18 1.9 0.5 0.5
1990 22 8 20 1.6 0.4 0.5
1991 17 7 16 2.6 0.4 0.3
1992 20 11 19 2.2 0.6 0.4
1993 18 9 16 2.1 0.4 0.5
1994 21 5 20 1.7 0.2 0.5
1995 18 5 17 1.1 0.2 0.5
1996 20 7 19 1.9 0.3 0.5
1997 19 8 17 1.4 0.3 0.4
1998 23 7 22 3.9 0.3 0.4
1999 27 7 25 3.1 0.3 0.4
2000 24 9 22 1.1 0.4 0.4
2001 25 10 22 1.6 0.4 0.3
20022 45 12 43 3.4 0.5 0.4
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.15C Standard Errors of Numbers (in Thousands) of Persons Who First Used Alcohol in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 191 137 129 0.3 7.7 20.7
1966 168 129 106 0.2 7.1 16.8
1967 187 142 126 0.2 8.0 19.3
1968 175 133 114 0.2 7.5 17.6
1969 190 131 136 0.2 7.2 21.2
1970 188 123 131 0.2 6.5 21.1
1971 160 105 119 0.2 5.5 19.3
1972 170 122 119 0.3 6.5 21.3
1973 154 118 97 0.2 6.5 16.7
1974 149 118 89 0.3 6.3 16.0
1975 151 114 91 0.2 6.4 15.9
1976 144 111 84 0.2 6.3 14.3
1977 151 121 85 0.2 7.0 15.2
1978 141 121 73 0.1 7.3 13.7
1979 141 120 75 0.2 7.6 14.8
1980 136 112 80 0.3 6.8 14.8
1981 145 117 87 0.2 7.8 16.3
1982 147 120 81 0.2 7.7 15.2
1983 128 102 70 0.2 6.9 14.6
1984 137 111 74 0.2 7.3 15.5
1985 130 103 80 0.4 6.9 16.0
1986 121 98 68 0.2 6.7 14.7
1987 119 92 75 0.3 6.7 14.9
1988 114 89 70 0.2 6.8 14.7
1989 127 103 79 0.2 7.5 15.5
1990 115 87 70 0.2 6.3 14.7
1991 108 76 75 0.2 5.6 15.2
1992 112 82 78 0.3 5.3 15.5
1993 96 73 69 0.2 4.7 14.2
1994 97 58 74 0.1 3.6 15.5
1995 90 57 65 0.2 3.2 14.4
1996 87 58 63 0.2 3.3 13.0
1997 86 60 54 0.1 3.3 10.7
1998 80 59 52 0.2 3.3 10.7
1999 80 60 53 0.1 3.2 10.4
2000 92 68 58 0.1 3.9 11.2
20012   119 91 69 0.2 5.3 13.7
20022 -- -- 79 -- 5.5 15.2
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.16C Standard Errors of Numbers (in Thousands) of Persons Who First Used Alcohol in the United States by Underage and Legal Drinking Age Groups, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 21 21 or Older 12–20 21–25
1965 191 168 86 0.3 7.9 27.9
1966 168 155 63 0.2 7.1 23.3
1967 187 183 73 0.2 8.6 25.3
1968 175 160 64 0.2 7.5 20.2
1969 190 171 88 0.2 7.7 31.3
1970 188 159 91 0.2 7.2 32.5
1971 160 129 82 0.2 5.9 26.8
1972 170 139 101 0.3 6.5 39.6
1973 154 142 68 0.2 6.7 23.9
1974 149 138 67 0.3 6.3 22.9
1975 151 136 65 0.2 6.5 22.6
1976 144 131 58 0.2 6.5 18.2
1977 151 138 69 0.2 6.8 22.3
1978 141 133 48 0.1 6.8 17.7
1979 141 134 46 0.2 7.2 17.1
1980 136 128 52 0.3 6.9 16.7
1981 145 134 52 0.2 7.6 15.7
1982 147 135 51 0.2 7.5 17.4
1983 128 119 46 0.2 6.8 17.6
1984 137 124 46 0.2 7.0 17.7
1985 130 116 58 0.4 6.7 19.2
1986 121 112 44 0.2 6.7 17.0
1987 119 108 52 0.3 6.7 19.2
1988 114 102 50 0.2 6.5 21.9
1989 127 120 52 0.2 7.3 22.3
1990 115 101 47 0.2 6.2 20.5
1991 108 91 51 0.2 5.6 22.1
1992 112 98 56 0.3 5.5 20.6
1993 96 88 47 0.2 4.8 19.5
1994 97 81 50 0.1 4.5 22.2
1995 90 77 48 0.2 3.8 19.9
1996 87 71 45 0.2 3.6 18.8
1997 86 70 43 0.1 3.4 18.5
1998 80 67 43 0.2 3.2 17.8
1999 80 68 41 0.1 3.1 16.4
2000 92 80 45 0.1 3.8 20.6
20012   119 107 53 0.2 5.3 20.5
20022 -- -- 56 -- 5.4 19.6
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.17C Standard Errors of Numbers (in Thousands) of Persons Who First Used Any Cigarettes in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 157 135 78 0.2 9.0 12.8
1966 144 117 83 0.3 7.6 12.3
1967 161 141 83 0.3 9.0 11.4
1968 163 120 102 0.2 7.5 14.0
1969 163 125 94 0.3 7.9 11.6
1970 146 118 88 0.2 6.9 11.4
1971 141 108 90 0.3 6.2 10.9
1972 142 120 77 0.2 7.0 9.6
1973 132 118 59 0.2 7.0 7.1
1974 138 119 74 0.2 7.0 8.0
1975 143 117 79 0.2 7.4 8.6
1976 126 112 67 0.2 7.3 7.0
1977 125 109 60 0.2 7.0 6.6
1978 128 113 60 0.2 7.4 5.6
1979 122 110 60 0.2 7.1 6.2
1980 121 92 71 0.2 6.4 6.9
1981 119 98 64 0.2 6.5 6.7
1982 113 102 49 0.2 6.8 5.1
1983 115 97 60 0.5 6.5 5.8
1984 109 99 46 0.1 6.7 5.2
1985 112 98 53 0.2 6.5 5.9
1986 103 87 53 0.2 6.2 5.9
1987 105 88 58 0.2 6.2 6.4
1988 103 80 59 0.2 5.8 6.2
1989 111 91 55 0.2 6.6 5.7
1990 93 77 50 0.2 5.9 5.1
1991 93 76 58 0.2 5.5 6.1
1992 93 67 64 0.2 4.6 6.6
1993 86 64 54 0.1 4.1 5.6
1994 86 53 68 0.2 3.2 7.0
1995 71 58 50 0.1 3.5 5.4
1996 76 55 52 0.1 3.3 5.7
1997 78 56 53 0.2 3.3 5.6
1998 70 54 42 0.2 3.1 4.2
1999 68 51 45 0.2 3.1 4.6
2000 67 52 39 0.2 3.1 3.5
20012   86 69 49 0.2 3.9 4.7
20022 -- -- 82 -- 3.4 4.2
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.18C Standard Errors of Numbers (in Thousands) of Persons Who Began Daily Cigarette Use in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 121 78 97 0.4 4.0 7.7
1966 117 89 83 0.4 4.5 6.4
1967 118 83 86 0.2 4.1 6.3
1968 129 70 108 0.4 3.2 7.4
1969 132 78 103 0.3 3.6 6.9
1970 120 69 99 0.4 3.3 5.6
1971 123 72 94 0.3 3.2 5.6
1972 109 71 85 0.2 3.3 5.1
1973 109 72 88 0.3 3.2 4.6
1974 108 79 75 0.2 3.5 4.1
1975 121 77 90 0.3 3.5 4.7
1976 99 73 68 0.3 3.4 3.2
1977 105 79 70 0.3 3.7 3.4
1978 103 70 73 0.4 3.4 3.3
1979 99 71 70 0.3 3.4 3.2
1980 100 70 73 0.4 3.4 3.0
1981 94 67 64 0.3 3.3 2.7
1982 99 68 69 0.3 3.5 3.2
1983 90 63 63 0.3 3.2 2.9
1984 83 60 55 0.2 3.2 2.6
1985 81 59 54 0.2 3.1 2.6
1986 78 58 53 0.4 3.1 2.1
1987 80 53 58 0.4 2.8 2.6
1988 72 46 58 0.4 2.6 2.6
1989 77 49 57 0.3 2.8 2.8
1990 73 51 54 0.3 2.9 2.5
1991 86 50 68 0.5 2.8 3.2
1992 74 44 60 0.3 2.4 2.9
1993 64 41 48 0.2 2.2 2.3
1994 72 34 63 0.3 1.7 2.8
1995 63 35 51 0.2 1.7 2.6
1996 71 35 63 0.4 1.7 2.7
1997 69 35 58 0.3 1.7 2.8
1998 58 34 47 0.2 1.5 2.3
1999 56 34 42 0.4 1.6 1.9
2000 58 30 49 0.3 1.4 1.9
2001 52 31 41 0.4 1.4 1.4
20022 64 36 55 0.7 1.6 1.8
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.19C Standard Errors of Numbers (in Thousands) of Persons Who First Used Smokeless Tobacco in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 79 66 48 0.9 3.2 2.1
1966 59 39 42 0.9 1.7 2.2
1967 82 54 61 0.9 2.3 2.3
1968 71 52 47 0.7 2.3 2.0
1969 68 53 43 0.7 2.2 1.7
1970 64 38 52 0.5 1.5 2.2
1971 64 40 49 0.6 1.6 1.7
1972 67 47 50 0.6 1.8 1.8
1973 70 50 49 0.5 2.1 1.8
1974 72 53 51 0.6 2.1 1.9
1975 70 51 48 0.9 1.9 1.4
1976 72 57 51 0.6 2.4 1.4
1977 85 61 59 0.5 2.6 1.9
1978 83 62 56 0.4 2.8 1.6
1979 96 71 61 0.6 3.1 1.4
1980 84 66 52 0.7 3.1 1.5
1981 84 62 55 0.5 2.9 1.7
1982 85 61 58 0.6 2.9 1.7
1983 76 61 49 0.6 3.1 1.5
1984 87 63 56 0.5 3.4 1.8
1985 73 57 41 0.3 3.0 1.5
1986 75 63 40 0.4 3.5 1.5
1987 65 49 44 0.7 2.8 1.6
1988 65 52 40 0.5 2.9 1.6
1989 58 42 42 0.4 2.5 1.8
1990 70 48 49 0.5 2.8 1.7
1991 67 39 54 0.9 2.3 1.7
1992 60 41 43 0.6 2.3 1.7
1993 53 33 40 0.3 1.7 1.8
1994 63 28 55 1.0 1.3 1.8
1995 50 28 41 0.7 1.3 1.5
1996 45 31 31 0.5 1.4 1.2
1997 44 28 35 0.8 1.3 1.2
1998 38 26 26 0.3 1.1 1.0
1999 39 27 28 0.4 1.1 1.0
2000 46 25 38 0.5 1.1 1.3
2001 39 21 34 0.4 0.9 1.1
20022 60 31 49 0.8 1.3 1.1
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.20C Standard Errors of Numbers (in Thousands) of Persons Who First Used Cigars in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 110 55 86 0.7 2.7 4.8
1966 112 73 85 0.4 3.6 5.0
1967 111 68 89 0.5 3.3 4.7
1968 110 63 88 0.4 3.0 4.6
1969 126 69 105 0.7 3.0 4.7
1970 98 52 86 0.5 2.3 4.0
1971 104 50 85 0.5 2.1 3.8
1972 99 57 85 0.4 2.4 3.6
1973 123 55 101 0.3 2.3 4.5
1974 93 46 80 0.5 1.9 3.0
1975 94 52 79 0.5 2.2 3.1
1976 101 53 86 0.7 2.3 3.0
1977 95 50 77 0.6 2.1 2.7
1978 89 47 78 0.5 2.1 2.7
1979 84 42 73 0.6 1.8 2.4
1980 93 42 81 0.5 1.9 2.7
1981 80 35 71 0.6 1.7 2.1
1982 90 42 80 0.6 2.0 2.7
1983 77 42 66 0.5 2.0 2.0
1984 78 37 68 0.3 1.8 2.5
1985 80 44 66 0.5 2.2 2.4
1986 70 39 59 0.4 2.0 2.0
1987 87 34 78 0.8 1.8 2.6
1988 99 40 90 0.6 2.1 2.7
1989 97 35 93 0.7 1.9 2.6
1990 86 37 77 0.5 2.0 2.8
1991 85 42 74 0.4 2.3 2.5
1992 98 37 90 0.4 1.9 3.0
1993 93 32 87 0.5 1.6 2.8
1994 103 37 95 0.4 1.8 3.4
1995 104 35 98 0.4 1.7 3.8
1996 105 34 100 0.3 1.6 3.9
1997 109 39 101 0.3 1.7 3.8
1998 104 40 98 0.4 1.7 3.2
1999 91 41 79 0.3 1.9 3.1
2000 95 40 87 0.4 1.9 2.8
2001 85 39 72 0.6 1.7 2.1
20022 112 49 104 0.5 2.2 2.8
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of persons in the age group who first used the drug in the year, while the denominator is the person-time exposure of persons in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.21C Standard Errors of Numbers (in Thousands) of Males Who First Used Marijuana in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 81 51 63 0.6 5.2 6.7
1966 72 42 56 0.6 4.0 5.9
1967 85 51 74 0.4 4.8 7.8
1968 108 57 88 0.3 5.5 8.7
1969 127 63 110 0.4 6.2 11.7
1970 128 81 95 0.3 7.6 10.9
1971 111 68 97 0.4 6.6 11.2
1972 109 70 79 0.4 6.6 8.7
1973 113 72 87 0.5 7.0 10.8
1974 107 74 71 0.5 7.6 7.6
1975 107 72 74 0.5 7.4 8.2
1976 91 69 64 0.5 7.6 8.2
1977 97 77 61 0.5 8.3 8.1
1978 89 69 59 0.5 7.5 8.1
1979 100 70 69 0.6 8.0 8.0
1980 86 62 57 0.6 7.0 7.4
1981 85 58 62 0.6 7.3 8.3
1982 86 65 60 0.7 7.9 7.5
1983 81 66 50 0.5 7.4 6.8
1984 76 57 52 0.5 6.9 6.6
1985 80 66 43 0.6 8.1 5.9
1986 75 62 45 0.5 7.8 6.0
1987 66 53 40 0.6 6.7 6.1
1988 65 49 41 1.4 6.2 4.7
1989 67 53 41 0.6 6.8 5.7
1990 59 38 44 0.9 4.8 5.6
1991 57 48 32 0.2 5.8 4.8
1992 71 48 51 0.4 5.8 7.5
1993 68 41 51 0.7 4.8 6.4
1994 57 35 45 0.7 4.0 6.0
1995 61 35 50 0.3 3.8 7.0
1996 49 33 34 0.2 3.7 4.8
1997 48 33 34 0.2 3.3 4.6
1998 48 35 32 0.2 3.6 4.6
1999 46 31 31 0.4 3.1 4.2
2000 49 36 32 0.4 3.6 4.1
2001 45 30 35 0.4 2.9 3.6
20022 54 41 35 0.2 4.2 5.2
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of males in the age group who first used the drug in the year, while the denominator is the person-time exposure of males in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.22C Standard Errors of Numbers (in Thousands) of Males Who First Used Cocaine in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 25 * 23 * * *
1966 * * * * * *
1967 * * * * * *
1968 49 * 39 1.3 * 3.5
1969 34 14 32 2.0 1.2 2.3
1970 36 17 32 0.5 1.5 2.6
1971 60 21 57 0.9 1.8 4.0
1972 43 18 38 0.6 1.5 3.5
1973 57 29 51 0.6 2.5 3.8
1974 65 24 60 0.6 2.0 3.7
1975 61 24 56 0.8 2.0 3.4
1976 65 31 57 0.6 2.7 3.8
1977 72 30 67 0.8 2.7 4.0
1978 73 31 68 0.5 2.8 4.2
1979 76 32 67 0.4 3.0 4.7
1980 79 33 74 0.8 3.1 4.6
1981 67 28 62 0.4 2.7 4.5
1982 72 27 66 0.5 2.7 3.9
1983 72 23 68 0.4 2.3 4.8
1984 64 34 57 0.5 3.5 3.9
1985 63 24 58 0.7 2.4 3.8
1986 61 25 59 0.8 2.6 4.0
1987 64 29 58 0.8 3.1 3.5
1988 63 23 57 0.9 2.4 4.1
1989 50 17 47 0.7 1.9 3.2
1990 59 24 56 0.9 2.6 3.2
1991 45 19 41 0.9 2.0 3.0
1992 55 21 51 1.3 2.2 3.0
1993 39 16 36 0.8 1.6 2.5
1994 40 10 39 0.8 1.0 2.7
1995 42 13 40 0.7 1.2 2.8
1996 49 14 47 1.2 1.3 3.1
1997 40 12 38 0.6 1.1 3.0
1998 34 14 32 0.4 1.2 2.3
1999 36 13 33 0.4 1.1 2.1
2000 39 15 36 0.8 1.2 1.9
2001 40 15 37 0.4 1.2 1.8
20022 39 17 33 0.5 1.4 2.1
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of males in the age group who first used the drug in the year, while the denominator is the person-time exposure of males in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.23C Standard Errors of Numbers (in Thousands) of Males Who First Used Crack in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 * * * * * *
1966 * * * * * *
1967 * * * * * *
1968 * * * * * *
1969 * * * * * *
1970 * * * * * *
1971 * * * * * *
1972 * * * * * *
1973 * * * * * *
1974 * * * * * *
1975 * * * * * *
1976 * * * * * *
1977 * * * * * *
1978 22 * 20 1.0 * 1.3
1979 19 * 18 1.9 * 0.7
1980 30 * 24 1.9 * 0.9
1981 25 * 24 1.5 * 1.1
1982 31 * 30 1.4 * 1.1
1983 27 * 26 2.6 * 0.8
1984 31 10 29 1.5 1.0 1.4
1985 48 14 45 1.3 1.4 2.1
1986 29 10 27 2.1 1.0 1.2
1987 30 * 28 1.1 * 1.5
1988 35 8 34 1.1 0.8 1.6
1989 31 * 31 0.6 * 1.7
1990 43 8 42 1.2 0.8 1.5
1991 41 13 37 1.1 1.3 1.7
1992 42 7 41 1.4 0.7 1.7
1993 35 8 34 1.7 0.8 1.5
1994 34 8 33 0.9 0.8 1.2
1995 38 6 38 1.4 0.5 1.6
1996 30 6 30 1.3 0.6 1.3
1997 33 6 33 1.2 0.5 1.5
1998 30 9 29 0.8 0.8 1.5
1999 27 7 26 1.0 0.6 1.4
2000 30 9 28 1.2 0.7 1.0
2001 25 7 24 0.9 0.6 0.8
20022 31 8 30 1.2 0.6 1.5
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of males in the age group who first used the drug in the year, while the denominator is the person-time exposure of males in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.24C Standard Errors of Numbers (in Thousands) of Males Who First Used Heroin in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 * * * * * *
1966 * * * * * *
1967 * * * * * *
1968 33 * * * * *
1969 15 * 14 0.9 * 1.2
1970 * * * * * *
1971 25 6 24 0.8 0.5 1.9
1972 23 * 23 1.2 * 1.6
1973 38 * 39 1.1 * 2.6
1974 33 * 32 0.7 * 2.1
1975 15 * 15 1.8 * 0.9
1976 20 * 20 1.5 * 1.0
1977 21 * 21 0.7 * 1.4
1978 16 * 16 1.5 * 1.0
1979 17 7 15 1.0 0.7 0.9
1980 20 * 16 1.2 * 1.0
1981 18 * 18 0.9 * 1.0
1982 14 * 14 1.0 * 0.8
1983 25 * 25 2.0 * 1.2
1984 18 * 15 1.8 * 0.8
1985 10 * 10 1.1 * 0.3
1986 21 * 17 1.4 * 1.0
1987 16 * 16 1.9 * 0.7
1988 14 * 14 1.4 * 0.8
1989 18 * 17 1.6 * 0.9
1990 12 * 11 2.3 * *
1991 23 * 23 1.0 * 0.9
1992 18 * 17 1.8 * 0.7
1993 12 2 12 1.4 0.2 0.6
1994 15 3 15 1.7 0.3 *
1995 18 8 16 1.5 0.7 *
1996 19 3 19 1.3 0.3 1.0
1997 16 5 16 1.9 0.4 0.8
1998 19 4 19 1.1 0.3 0.8
1999 17 4 16 2.4 0.3 0.8
2000 10 4 10 0.8 0.3 0.6
2001 15 3 15 2.0 0.3 0.7
20022 18 5 17 1.4 0.4 0.7
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of males in the age group who first used the drug in the year, while the denominator is the person-time exposure of males in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.25C Standard Errors of Numbers (in Thousands) of Males Who First Used Hallucinogens in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 19 * 19 * * 2.0
1966 23 15 17 0.8 1.5 1.7
1967 50 36 35 0.9 3.3 3.1
1968 45 31 32 1.9 2.7 2.3
1969 63 35 55 0.5 3.2 4.6
1970 75 37 65 0.4 3.2 5.5
1971 69 39 57 0.4 3.4 4.8
1972 61 47 38 0.3 4.2 3.2
1973 62 37 49 0.4 3.3 4.1
1974 60 34 47 0.4 3.0 3.8
1975 59 39 43 0.3 3.5 3.6
1976 56 39 40 0.3 3.5 3.2
1977 57 35 45 0.3 3.2 3.7
1978 52 36 40 0.3 3.3 3.3
1979 67 43 50 0.4 4.1 3.6
1980 62 39 46 0.5 3.8 3.5
1981 51 29 42 0.6 3.0 3.1
1982 55 29 47 0.4 2.9 3.6
1983 47 32 36 0.5 3.2 2.7
1984 55 35 41 0.8 3.5 3.1
1985 41 24 34 0.3 2.5 2.7
1986 43 29 31 0.6 3.0 2.3
1987 47 32 32 0.8 3.4 2.7
1988 55 32 45 0.5 3.5 3.5
1989 44 26 36 0.4 2.8 3.0
1990 47 27 39 0.4 3.0 3.0
1991 44 29 31 0.5 3.1 2.6
1992 39 27 29 0.4 2.9 2.5
1993 43 26 34 0.5 2.7 2.9
1994 38 20 32 0.3 2.0 2.8
1995 36 18 31 0.3 1.7 2.8
1996 43 18 39 1.2 1.7 3.2
1997 39 17 34 0.6 1.6 2.9
1998 41 19 35 0.4 1.6 2.7
1999 42 20 34 0.3 1.7 2.8
2000 38 23 29 0.3 2.0 2.1
2001 36 18 31 0.3 1.5 2.2
20022 38 21 32 0.4 1.7 2.5
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of males in the age group who first used the drug in the year, while the denominator is the person-time exposure of males in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.26C Standard Errors of Numbers (in Thousands) of Males Who First Used LSD in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 14 * 13 * * 1.4
1966 15 * 9 1.3 * *
1967 33 21 25 1.4 * 2.2
1968 49 39 29 0.9 3.6 2.0
1969 59 31 53 1.0 2.7 4.3
1970 71 36 59 0.4 3.2 4.9
1971 57 32 48 0.5 2.8 3.7
1972 63 44 45 0.3 3.8 3.7
1973 62 39 49 0.5 3.4 4.0
1974 56 34 43 0.5 3.0 3.4
1975 45 28 36 0.4 2.4 2.8
1976 44 30 33 0.3 2.7 2.7
1977 51 33 39 0.4 3.0 3.1
1978 41 28 32 0.3 2.5 2.5
1979 53 35 42 0.6 3.3 2.7
1980 63 42 48 0.3 4.0 3.6
1981 44 26 36 0.5 2.6 2.6
1982 44 27 36 0.4 2.7 2.6
1983 41 30 31 0.4 3.1 2.3
1984 46 26 38 1.1 2.7 2.4
1985 38 25 29 0.4 2.5 2.2
1986 33 21 25 0.5 2.2 1.9
1987 37 26 26 0.5 2.8 1.9
1988 51 35 36 0.3 3.7 2.7
1989 41 25 33 0.6 2.7 2.4
1990 40 28 29 0.6 3.0 2.2
1991 42 27 30 0.5 2.9 2.4
1992 36 26 31 0.4 2.7 2.5
1993 34 19 29 0.4 2.0 2.3
1994 36 23 27 0.3 2.4 2.2
1995 35 18 30 0.2 1.7 2.6
1996 36 16 32 0.4 1.5 2.8
1997 32 14 29 0.4 1.3 2.3
1998 28 17 21 0.2 1.5 1.9
1999 28 17 22 0.3 1.4 1.6
2000 29 17 23 0.2 1.4 1.9
2001 21 14 15 0.2 1.2 1.2
20022 19 15 12 0.3 1.2 1.0
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of males in the age group who first used the drug in the year, while the denominator is the person-time exposure of males in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.27C Standard Errors of Numbers (in Thousands) of Males Who First Used PCP in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 * * * * * *
1966 * * * * * *
1967 * * * * * *
1968 * * * * * *
1969 9 8 * * 0.7 *
1970 36 17 31 1.0 1.5 2.4
1971 34 22 25 0.5 1.9 2.0
1972 40 28 30 0.4 2.4 2.2
1973 31 15 27 0.6 1.3 2.0
1974 47 29 33 0.4 2.4 2.2
1975 38 27 27 0.6 2.4 1.9
1976 44 28 32 0.6 2.4 2.1
1977 41 22 34 0.6 2.0 2.2
1978 39 14 36 1.1 1.3 2.0
1979 32 19 27 0.6 1.7 1.8
1980 40 25 31 1.2 2.3 1.7
1981 27 16 22 0.8 1.5 1.4
1982 31 14 28 0.9 1.3 1.8
1983 25 17 18 0.5 1.6 1.3
1984 20 9 17 0.7 0.9 1.2
1985 21 14 16 0.9 1.4 1.1
1986 21 * 21 1.1 * 1.3
1987 23 * 15 1.5 * 0.9
1988 18 10 17 1.8 1.0 1.1
1989 18 8 16 1.0 0.9 1.0
1990 13 10 9 2.6 1.0 *
1991 18 11 15 2.2 1.1 0.8
1992 21 3 20 0.6 0.3 1.5
1993 10 6 8 1.8 0.6 *
1994 15 11 10 0.3 1.1 0.7
1995 19 7 18 1.0 0.6 1.3
1996 11 7 9 0.4 0.7 0.7
1997 13 5 11 0.6 0.4 0.9
1998 11 9 6 0.6 0.7 0.4
1999 17 9 15 0.8 0.7 1.1
2000 12 9 7 0.3 0.7 0.5
2001 14 8 12 0.7 0.6 0.7
20022 14 9 10 0.4 0.7 0.7
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of males in the age group who first used the drug in the year, while the denominator is the person-time exposure of males in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.28C Standard Errors of Numbers (in Thousands) of Males Who First Used Ecstasy in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 * * * * * *
1966 * * * * * *
1967 * * * * * *
1968 * * * * * *
1969 * * * * * *
1970 * * * * * *
1971 * * * * * *
1972 * * * * * *
1973 * * * * * *
1974 * * * * * *
1975 * * * * * *
1976 14 * 13 * * *
1977 * * * * * *
1978 * * * * * *
1979 13 * 13 * * *
1980 11 * * * * *
1981 * * * * * *
1982 10 * * * * *
1983 23 * * * * *
1984 21 * 21 1.9 * 1.0
1985 18 * 17 1.2 * 0.9
1986 18 * 15 1.2 * 0.9
1987 22 * 21 0.7 * 1.4
1988 31 * 28 2.0 * 1.3
1989 29 13 26 1.5 1.4 1.4
1990 27 * 27 1.1 * 1.2
1991 19 * 18 1.6 * 1.1
1992 24 * 23 1.1 * 1.3
1993 26 6 25 1.1 0.6 1.6
1994 23 10 21 1.3 1.0 1.2
1995 26 7 25 0.5 0.6 1.8
1996 37 7 36 3.0 0.6 1.7
1997 39 9 38 1.0 0.8 2.4
1998 40 9 39 0.4 0.8 2.4
1999 45 15 42 0.4 1.2 2.7
2000 49 18 44 0.5 1.5 2.4
2001 46 16 45 0.6 1.3 2.1
20022 49 16 46 1.3 1.3 2.0
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of males in the age group who first used the drug in the year, while the denominator is the person-time exposure of males in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.29C Standard Errors of Numbers (in Thousands) of Males Who First Used Inhalants in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 23 23 * 0.4 2.3 *
1966 41 37 17 0.9 3.5 *
1967 32 23 22 1.9 2.0 1.6
1968 46 31 34 1.7 2.8 *
1969 39 30 25 0.7 2.8 2.2
1970 39 29 26 0.8 2.1 2.1
1971 37 31 19 0.5 2.7 1.6
1972 42 32 28 1.5 2.8 1.4
1973 42 28 29 0.8 2.4 2.0
1974 47 26 39 0.9 2.0 2.5
1975 46 36 26 0.7 3.0 1.8
1976 53 38 37 0.6 3.4 2.3
1977 59 34 49 0.6 3.0 2.9
1978 47 35 32 0.5 3.3 2.2
1979 64 42 47 0.5 4.0 2.9
1980 54 38 38 1.1 3.7 2.1
1981 44 28 34 0.5 2.9 2.3
1982 41 28 30 0.7 2.8 2.1
1983 47 36 31 1.1 3.7 1.7
1984 43 32 29 0.7 3.2 1.9
1985 42 28 31 1.2 2.9 1.8
1986 38 26 28 0.8 2.8 1.9
1987 44 32 26 0.4 3.4 2.0
1988 44 31 30 0.4 3.3 2.3
1989 41 26 31 0.4 2.9 2.5
1990 40 25 28 0.6 2.8 2.1
1991 34 24 23 0.9 2.7 1.3
1992 39 28 28 0.4 3.0 2.2
1993 36 22 27 0.8 2.3 1.9
1994 30 21 20 0.4 2.1 1.6
1995 31 17 25 0.4 1.6 2.0
1996 28 15 24 0.6 1.3 1.7
1997 30 17 23 0.4 1.4 1.9
1998 32 18 25 0.8 1.5 1.8
1999 27 20 17 0.2 1.6 1.3
2000 34 21 25 0.6 1.6 1.2
2001 29 22 18 0.3 1.8 1.3
20022 35 30 19 0.3 2.4 1.4
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of males in the age group who first used the drug in the year, while the denominator is the person-time exposure of males in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.30C Standard Errors of Numbers (in Thousands) of Males Who First Used Pain Relievers Nonmedically in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 19 19 * * * *
1966 * * * * * *
1967 19 * 16 3.6 * 1.3
1968 40 31 24 1.0 * 2.1
1969 48 31 32 1.0 2.7 2.2
1970 43 19 38 1.9 1.5 2.6
1971 45 32 31 0.7 2.8 2.4
1972 41 19 37 1.4 1.6 2.3
1973 42 24 31 0.9 2.0 2.0
1974 43 24 35 1.2 2.0 1.7
1975 41 24 33 0.9 2.0 2.2
1976 43 24 36 0.9 2.1 2.1
1977 53 21 47 0.8 1.9 2.7
1978 40 25 31 1.0 2.2 1.9
1979 38 23 31 0.7 2.1 2.0
1980 49 24 41 1.2 2.2 1.5
1981 38 20 33 1.1 2.0 1.7
1982 34 23 30 1.6 2.2 1.4
1983 54 23 49 0.9 2.4 2.8
1984 39 16 36 1.4 1.7 1.7
1985 41 15 38 0.8 1.5 2.2
1986 43 15 42 1.3 1.6 2.2
1987 47 18 44 1.0 1.8 2.2
1988 44 17 41 1.1 1.7 2.2
1989 48 24 42 1.3 2.6 2.4
1990 41 15 37 1.2 1.6 2.0
1991 36 21 30 1.0 2.2 1.8
1992 52 13 50 1.2 1.4 2.4
1993 37 14 34 0.9 1.4 2.3
1994 45 14 42 0.8 1.3 2.1
1995 42 14 40 1.0 1.2 2.7
1996 42 15 39 0.7 1.4 2.7
1997 43 19 39 0.5 1.6 2.5
1998 50 20 47 0.8 1.7 2.4
1999 52 24 44 0.6 2.0 2.7
2000 57 24 51 0.5 2.0 2.8
2001 49 25 44 0.4 2.1 2.3
20022 58 31 52 0.6 2.6 2.5
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of males in the age group who first used the drug in the year, while the denominator is the person-time exposure of males in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.31C Standard Errors of Numbers (in Thousands) of Males Who First Used Tranquilizers Nonmedically in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 * * * * * *
1966 * * * * * *
1967 22 * 22 * * *
1968 18 * * * * *
1969 29 23 18 0.8 2.0 1.5
1970 34 18 28 1.1 1.6 2.0
1971 34 19 25 1.0 1.7 1.8
1972 39 27 28 1.0 2.3 1.8
1973 49 19 48 1.5 1.6 2.5
1974 39 29 26 0.5 2.5 1.8
1975 48 23 41 1.0 2.0 2.1
1976 42 28 32 0.7 2.4 2.0
1977 46 25 39 1.2 2.2 2.0
1978 43 20 37 0.9 1.8 2.0
1979 36 26 23 0.9 2.4 1.5
1980 31 17 27 0.8 1.6 1.7
1981 31 19 24 1.0 1.8 1.4
1982 38 15 35 1.1 1.5 1.9
1983 41 11 40 0.8 0.8 2.5
1984 33 11 31 0.8 1.1 1.6
1985 32 14 29 1.3 1.4 1.4
1986 39 14 37 3.5 1.4 1.5
1987 32 11 30 0.9 1.1 1.5
1988 44 14 42 1.6 1.5 2.0
1989 32 14 29 0.9 1.5 1.8
1990 33 15 30 1.9 1.6 1.6
1991 28 16 25 1.1 1.7 1.4
1992 32 12 29 1.2 1.2 1.5
1993 38 11 36 1.9 1.2 1.8
1994 29 9 28 0.9 0.8 1.6
1995 24 11 22 1.2 1.0 1.4
1996 29 9 28 0.7 0.8 1.8
1997 34 10 32 1.1 0.9 1.7
1998 42 14 39 0.9 1.2 2.0
1999 32 15 29 1.2 1.2 1.3
2000 42 15 40 1.0 1.3 1.8
2001 34 16 29 0.8 1.2 1.5
20022 45 16 42 0.5 1.3 2.5
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of males in the age group who first used the drug in the year, while the denominator is the person-time exposure of males in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.32C Standard Errors of Numbers (in Thousands) of Males Who First Used Stimulants Nonmedically in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 45 * 33 2.4 * *
1966 37 * 35 0.8 * 3.5
1967 32 23 22 1.7 2.2 1.8
1968 42 23 35 0.6 2.1 3.2
1969 50 27 42 0.6 2.5 3.5
1970 56 31 46 0.6 2.7 3.8
1971 68 30 62 0.6 2.7 4.8
1972 51 28 43 0.4 2.4 3.3
1973 44 23 37 0.8 2.0 2.7
1974 39 23 32 0.5 2.0 2.4
1975 48 24 41 0.6 2.1 2.7
1976 45 26 37 0.9 2.2 2.3
1977 40 27 32 0.4 2.4 2.3
1978 49 28 37 0.6 2.6 2.5
1979 48 26 40 0.3 2.4 2.8
1980 49 27 40 0.5 2.6 2.8
1981 52 23 44 0.9 2.3 2.6
1982 45 30 31 0.7 2.9 2.0
1983 42 13 40 0.7 1.3 2.4
1984 42 23 32 1.2 2.3 1.7
1985 33 19 27 0.7 1.9 1.8
1986 28 18 21 0.7 1.9 1.5
1987 41 23 31 0.9 2.4 1.9
1988 29 18 23 0.8 1.9 1.6
1989 33 14 30 0.6 1.5 2.2
1990 35 24 24 0.8 2.6 1.5
1991 22 12 19 0.7 1.2 1.3
1992 26 16 21 1.5 1.7 1.1
1993 28 14 25 0.5 1.4 1.9
1994 27 11 25 1.0 1.1 1.7
1995 32 12 30 1.1 1.1 1.9
1996 32 13 29 0.8 1.1 1.7
1997 28 13 25 1.1 1.2 1.5
1998 29 14 26 0.7 1.2 1.4
1999 28 15 25 0.7 1.2 1.3
2000 32 14 31 0.9 1.1 1.5
2001 24 14 20 0.4 1.2 1.3
20022 33 18 27 0.9 1.4 1.1
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of males in the age group who first used the drug in the year, while the denominator is the person-time exposure of males in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.33C Standard Errors of Numbers (in Thousands) of Males Who First Used Methamphetamines Nonmedically in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 * * * * * *
1966 26 * 24 * * 2.4
1967 24 17 * 1.4 1.6 *
1968 23 20 11 0.5 1.9 1.0
1969 47 36 31 0.7 3.2 2.5
1970 36 18 31 0.9 1.6 2.5
1971 70 29 63 0.6 2.5 4.8
1972 34 19 28 0.3 1.6 2.2
1973 43 21 38 0.8 1.8 2.4
1974 39 23 32 0.7 1.9 2.3
1975 38 20 33 0.6 1.7 2.3
1976 37 22 29 1.2 1.9 1.7
1977 35 23 26 0.6 2.0 1.8
1978 32 14 25 0.8 1.3 1.6
1979 47 30 36 0.5 2.8 2.4
1980 36 22 27 0.5 2.1 1.7
1981 33 16 29 0.7 1.6 1.7
1982 37 21 31 0.5 2.1 2.0
1983 37 12 35 0.8 1.2 2.0
1984 34 21 26 0.6 2.1 1.6
1985 29 16 24 0.8 1.6 1.5
1986 29 18 23 0.7 1.8 1.6
1987 38 20 29 0.8 2.0 1.7
1988 28 15 24 1.0 1.5 1.6
1989 31 13 28 0.7 1.4 2.0
1990 25 13 22 1.1 1.4 1.3
1991 23 12 20 0.8 1.3 1.4
1992 19 11 16 0.9 1.1 1.1
1993 29 14 26 0.9 1.4 1.8
1994 24 9 23 0.6 0.9 1.6
1995 26 9 24 0.9 0.8 1.6
1996 24 11 23 1.1 0.9 1.3
1997 20 9 18 0.6 0.8 1.2
1998 26 12 22 1.2 1.0 0.8
1999 21 9 19 0.8 0.8 1.1
2000 19 9 17 0.8 0.7 0.8
2001 18 10 16 0.7 0.8 0.9
20022 29 11 26 1.4 0.9 0.8
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of males in the age group who first used the drug in the year, while the denominator is the person-time exposure of males in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.34C Standard Errors of Numbers (in Thousands) of Males Who First Used Sedatives Nonmedically in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 17 * * * * *
1966 17 * * * * *
1967 26 15 18 1.4 1.4 1.6
1968 33 15 29 1.7 1.4 2.4
1969 47 37 29 0.6 3.3 2.5
1970 32 21 24 0.9 1.9 1.7
1971 49 34 36 0.6 2.9 2.8
1972 44 26 35 0.4 2.2 2.7
1973 47 31 34 0.8 2.6 2.4
1974 47 29 37 0.5 2.5 2.7
1975 46 25 37 0.6 2.1 2.6
1976 41 31 28 0.6 2.7 1.9
1977 44 21 42 0.5 1.8 2.7
1978 37 28 25 0.8 2.5 1.2
1979 41 27 31 0.5 2.6 2.1
1980 35 21 28 0.6 2.1 1.8
1981 36 17 28 1.0 1.7 1.4
1982 28 17 22 0.6 1.7 1.4
1983 31 14 28 0.9 1.4 1.8
1984 23 10 21 0.8 1.0 1.3
1985 21 * 16 1.4 * 0.9
1986 14 * 13 2.7 * 0.7
1987 23 * 22 2.2 * 0.6
1988 13 * 12 1.6 * 0.7
1989 13 7 11 3.7 * *
1990 12 * 11 2.6 * 0.7
1991 13 6 11 2.0 0.7 0.5
1992 17 10 13 3.9 1.1 0.6
1993 14 8 11 2.1 0.8 0.7
1994 18 4 18 1.8 0.4 0.9
1995 11 4 10 1.4 0.3 0.6
1996 13 5 12 1.6 0.4 0.8
1997 16 8 13 2.0 0.7 0.5
1998 15 5 14 3.7 0.4 0.6
1999 17 5 16 3.1 0.4 0.5
2000 18 7 16 1.3 0.6 0.8
2001 13 5 12 1.9 0.4 0.4
20022 10 9 4 0.5 0.7 0.3
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of males in the age group who first used the drug in the year, while the denominator is the person-time exposure of males in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.35C Standard Errors of Numbers (in Thousands) of Males Who First Used Alcohol in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 138 112 82 0.5 14.4 41.3
1966 130 109 66 0.2 13.8 33.7
1967 134 108 81 0.3 13.5 41.6
1968 128 109 64 0.2 14.2 32.0
1969 144 102 95 0.3 12.6 47.2
1970 134 100 77 0.2 11.6 47.1
1971 112 85 78 0.3 10.0 41.2
1972 111 95 63 0.3 11.2 39.1
1973 109 92 61 0.2 11.4 40.4
1974 98 83 54 0.2 10.4 34.9
1975 106 87 58 0.2 11.2 36.7
1976 104 81 54 0.2 10.6 32.3
1977 101 88 44 0.2 11.7 31.1
1978 107 96 47 0.2 12.9 29.1
1979 98 87 44 0.2 12.8 28.1
1980 89 81 42 0.2 11.8 25.9
1981 94 81 46 0.2 12.2 27.8
1982 100 86 50 0.2 12.2 29.1
1983 87 74 45 0.2 11.0 28.5
1984 95 83 43 0.2 12.0 27.2
1985 88 76 51 0.3 11.6 31.5
1986 82 72 36 0.2 11.3 21.2
1987 82 66 51 0.3 10.9 29.4
1988 78 66 43 0.2 10.9 24.6
1989 79 68 48 0.2 11.6 27.2
1990 75 60 41 0.2 9.4 22.2
1991 79 58 53 0.2 9.1 29.4
1992 77 57 51 0.5 8.2 27.9
1993 67 47 49 0.2 6.5 26.4
1994 64 42 45 0.2 5.6 26.1
1995 60 41 43 0.2 4.9 23.5
1996 59 41 42 0.2 4.8 21.0
1997 57 41 36 0.1 4.9 17.8
1998 53 41 36 0.1 4.7 18.9
1999 55 43 32 0.1 4.8 16.7
2000 61 47 36 0.1 5.6 16.7
20012   77 63 41 0.1 7.3 19.7
20022 -- -- 48 -- 7.0 21.2
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of males in the age group who first used the drug in the year, while the denominator is the person-time exposure of males in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.36C Standard Errors of Numbers (in Thousands) of Males Who First Used Alcohol in the United States by Underage and Legal Drinking Age Groups, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 21 21 or Older 12–20 21–25
1965 138 129 46 0.5 14.4 52.4
1966 130 127 24 0.2 14.1 30.2
1967 134 128 42 0.3 13.7 46.3
1968 128 123 35 0.2 14.1 36.8
1969 144 135 45 0.3 14.3 45.1
1970 134 123 49 0.2 13.0 69.9
1971 112 97 56 0.3 10.2 64.8
1972 111 105 40 0.3 11.3 54.1
1973 109 108 36 0.2 11.6 50.4
1974 98 94 35 0.2 10.7 45.8
1975 106 102 36 0.2 11.6 51.1
1976 104 96 34 0.2 11.1 42.3
1977 101 98 22 0.2 11.5 35.5
1978 107 104 25 0.2 12.4 35.4
1979 98 96 19 0.2 12.5 23.5
1980 89 87 24 0.2 11.5 31.6
1981 94 91 20 0.2 12.1 24.1
1982 100 95 31 0.2 11.9 36.9
1983 87 82 28 0.2 10.8 41.2
1984 95 93 16 0.2 11.8 23.8
1985 88 84 31 0.3 11.5 35.7
1986 82 78 22 0.2 11.0 22.1
1987 82 74 36 0.3 10.8 42.4
1988 78 72 29 0.2 10.3 37.0
1989 79 75 31 0.2 10.7 38.4
1990 75 69 26 0.2 9.1 34.3
1991 79 66 40 0.2 9.0 47.2
1992 77 68 35 0.5 8.7 39.0
1993 67 60 33 0.2 7.1 39.6
1994 64 56 28 0.2 6.9 39.4
1995 60 51 30 0.2 5.4 38.6
1996 59 52 27 0.2 5.5 28.9
1997 57 47 28 0.1 4.9 32.8
1998 53 46 28 0.1 4.7 32.6
1999 55 50 24 0.1 4.9 27.6
2000 61 56 25 0.1 5.6 29.7
20012   77 70 28 0.1 7.1 31.7
20022 -- -- 37 -- 6.7 30.5
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of males in the age group who first used the drug in the year, while the denominator is the person-time exposure of males in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.37C Standard Errors of Numbers (in Thousands) of Males Who First Used Any Cigarettes in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 116 105 47 0.3 15.8 22.5
1966 107 92 55 0.2 13.8 24.5
1967 112 94 58 0.2 14.4 25.4
1968 117 95 66 0.2 13.7 25.7
1969 113 90 65 0.3 13.2 25.4
1970 115 98 57 0.2 12.9 21.4
1971 89 75 46 0.3 10.1 16.8
1972 102 92 41 0.2 12.2 14.5
1973 89 82 34 0.2 10.8 11.0
1974 92 83 39 0.2 10.9 12.0
1975 90 80 40 0.3 10.8 11.0
1976 87 79 38 0.2 11.7 10.5
1977 90 83 35 0.2 11.8 9.3
1978 94 86 37 0.2 12.2 9.0
1979 85 74 43 0.3 10.4 10.6
1980 78 64 42 0.3 9.3 10.0
1981 79 66 41 0.2 9.6 10.7
1982 85 75 37 0.2 10.5 9.3
1983 76 69 36 0.2 10.0 8.4
1984 77 67 37 0.2 9.6 9.0
1985 77 66 40 0.2 9.5 9.1
1986 72 62 38 0.3 9.0 8.9
1987 76 60 45 0.3 8.9 10.7
1988 72 61 37 0.3 9.6 8.6
1989 75 66 37 0.2 10.2 9.4
1990 65 56 36 0.2 9.4 8.7
1991 64 51 43 0.2 7.7 10.6
1992 68 50 47 0.3 7.1 10.9
1993 59 47 34 0.2 6.4 8.4
1994 69 38 57 0.3 4.9 13.7
1995 49 40 32 0.2 5.0 7.9
1996 53 40 37 0.2 5.2 9.3
1997 56 38 41 0.2 4.5 9.9
1998 48 36 31 0.3 4.4 6.8
1999 48 38 30 0.2 4.6 7.4
2000 43 35 24 0.2 4.4 5.6
20012   63 49 37 0.3 5.6 7.4
20022 -- -- 75 -- 4.6 6.3
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of males in the age group who first used the drug in the year, while the denominator is the person-time exposure of males in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40806

Table  4.38C Standard Errors of Numbers (in Thousands) of Males Who Began Daily Cigarette Use in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 85 55 64 0.5 6.0 12.7
1966 96 82 58 0.5 8.7 11.3
1967 92 59 71 0.3 6.3 13.1
1968 94 54 80 0.3 5.1 13.8
1969 102 69 74 0.3 6.9 12.2
1970 82 54 62 0.3 5.3 9.6
1971 89 56 69 0.3 5.3 10.1
1972 85 57 62 0.2 5.3 8.8
1973 76 50 62 0.3 4.6 8.5
1974 76 58 52 0.3 5.3 6.5
1975 74 58 50 0.2 5.5 6.1
1976 66 49 47 0.4 4.7 5.2
1977 73 59 43 0.2 5.6 4.9
1978 68 49 48 0.3 5.0 4.9
1979 62 47 42 0.3 4.9 4.5
1980 63 50 40 0.3 5.1 4.1
1981 55 42 37 0.2 4.3 3.7
1982 68 46 48 0.3 4.8 4.7
1983 66 47 46 0.4 4.9 4.3
1984 63 44 41 0.3 4.7 4.1
1985 57 42 40 0.3 4.5 4.0
1986 54 37 40 0.4 4.2 3.5
1987 65 43 46 0.5 4.7 4.3
1988 53 35 38 0.4 4.1 3.6
1989 54 33 41 0.3 3.9 4.3
1990 55 38 40 0.5 4.4 3.7
1991 57 35 45 0.3 4.0 4.4
1992 57 32 45 0.4 3.6 4.6
1993 45 26 36 0.3 2.9 3.5
1994 49 23 43 0.3 2.5 4.2
1995 44 21 38 0.3 2.0 4.0
1996 52 25 47 0.6 2.4 4.1
1997 54 24 48 0.4 2.3 4.7
1998 44 23 37 0.3 2.1 4.1
1999 35 22 27 0.2 2.1 2.8
2000 41 24 34 0.4 2.1 2.5
2001 38 23 29 0.6 2.0 2.2
20022 44 27 36 1.2 2.3 3.0
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of males in the age group who first used the drug in the year, while the denominator is the person-time exposure of males in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.39C Standard Errors of Numbers (in Thousands) of Males Who First Used Smokeless Tobacco in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 75 65 44 0.9 6.8 4.7
1966 55 36 41 0.8 3.6 4.9
1967 78 47 61 1.0 4.4 5.4
1968 63 49 40 0.6 4.6 4.1
1969 65 51 41 0.7 4.6 3.8
1970 60 35 49 0.5 2.8 4.8
1971 59 33 48 0.7 2.7 3.9
1972 63 41 50 0.6 3.5 4.1
1973 63 42 44 0.6 3.7 3.5
1974 71 52 49 0.6 4.3 4.2
1975 63 49 40 0.6 4.0 3.0
1976 70 52 48 0.6 4.9 2.9
1977 83 60 58 0.5 5.6 4.2
1978 78 57 55 0.4 5.7 3.6
1979 91 68 56 0.7 6.9 3.1
1980 79 62 48 0.5 6.9 3.4
1981 81 59 53 0.6 6.7 3.9
1982 81 59 57 0.6 6.6 4.0
1983 71 54 47 0.7 6.7 3.6
1984 78 56 51 0.5 7.4 4.4
1985 65 53 35 0.3 6.6 3.3
1986 68 56 38 0.5 7.3 3.9
1987 58 45 41 0.8 6.3 4.2
1988 58 45 38 0.6 6.3 4.2
1989 54 39 40 0.4 5.6 4.8
1990 64 43 45 0.6 5.7 4.2
1991 63 36 51 1.1 4.8 4.6
1992 55 38 39 0.7 4.8 4.5
1993 46 31 32 0.3 3.6 4.2
1994 56 24 49 1.3 2.6 3.9
1995 45 26 37 0.6 2.7 3.7
1996 40 26 29 0.6 2.6 3.1
1997 40 25 31 0.9 2.5 2.6
1998 36 23 26 0.4 2.1 2.4
1999 35 25 24 0.4 2.3 2.2
2000 43 23 37 0.5 2.1 3.1
2001 36 19 31 0.5 1.7 2.6
20022 51 27 42 1.0 2.3 2.4
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of males in the age group who first used the drug in the year, while the denominator is the person-time exposure of males in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.40C Standard Errors of Numbers (in Thousands) of Males Who First Used Cigars in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 101 50 80 0.7 5.3 12.8
1966 106 72 77 0.4 7.6 13.1
1967 105 66 83 0.5 6.8 12.8
1968 103 62 80 0.4 6.3 11.9
1969 119 67 98 0.8 6.3 12.2
1970 83 49 69 0.6 4.6 9.4
1971 95 45 77 0.5 4.2 10.0
1972 92 51 81 0.4 4.5 10.0
1973 113 49 94 0.3 4.5 11.6
1974 78 42 65 0.5 3.7 7.5
1975 82 45 70 0.4 4.3 8.2
1976 86 47 72 0.5 4.4 7.4
1977 80 45 65 0.7 4.3 5.9
1978 78 43 69 0.5 4.1 6.5
1979 74 39 65 0.7 3.7 5.7
1980 82 39 70 0.6 3.9 6.4
1981 68 32 60 0.7 3.2 5.0
1982 80 38 71 0.8 3.9 6.1
1983 69 39 58 0.5 4.1 4.8
1984 71 34 61 0.3 3.6 5.8
1985 71 41 58 0.5 4.4 5.5
1986 64 37 54 0.5 4.0 4.7
1987 74 32 64 0.4 3.5 6.0
1988 78 38 66 0.5 4.2 6.0
1989 88 31 83 0.8 3.6 5.8
1990 76 32 68 0.5 3.7 6.5
1991 75 38 65 0.5 4.5 6.0
1992 81 34 74 0.4 3.7 6.6
1993 80 30 74 0.6 3.2 6.7
1994 79 31 72 0.5 3.2 6.8
1995 81 29 75 0.4 3.0 7.8
1996 79 29 74 0.3 2.9 7.8
1997 84 30 78 0.4 2.9 7.7
1998 69 32 62 0.4 2.9 6.2
1999 63 31 54 0.3 2.9 6.3
2000 62 33 56 0.4 3.1 5.6
2001 69 31 59 1.0 2.9 4.7
20022 87 43 74 0.5 3.9 6.1
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of males in the age group who first used the drug in the year, while the denominator is the person-time exposure of males in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.41C Standard Errors of Numbers (in Thousands) of Females Who First Used Marijuana in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 59 35 47 0.6 3.4 4.6
1966 50 21 45 0.9 1.9 3.8
1967 64 36 56 0.8 3.4 4.3
1968 85 49 69 0.6 4.5 5.3
1969 88 47 79 0.5 4.2 6.4
1970 92 47 79 0.4 4.2 6.4
1971 94 50 76 0.4 4.4 6.2
1972 88 56 69 0.4 5.0 5.9
1973 91 56 72 0.4 5.0 5.9
1974 92 60 71 0.4 5.5 5.9
1975 95 67 68 0.4 6.1 5.9
1976 98 70 69 0.6 6.7 5.5
1977 98 62 77 0.5 6.0 5.5
1978 99 76 67 0.6 7.6 5.8
1979 87 59 63 0.5 6.0 5.3
1980 83 61 55 0.6 6.2 5.0
1981 79 58 55 0.5 6.4 5.7
1982 71 48 52 0.8 5.1 4.5
1983 77 57 52 0.4 6.1 6.1
1984 70 55 43 0.7 6.0 4.3
1985 74 56 50 0.6 6.3 5.1
1986 64 44 45 0.4 5.0 5.1
1987 62 46 43 0.6 5.2 5.1
1988 62 49 36 0.5 5.6 4.3
1989 57 38 43 0.5 4.5 4.7
1990 53 38 39 0.9 4.4 3.9
1991 65 34 54 0.8 3.8 5.6
1992 57 37 40 0.4 4.0 4.6
1993 52 33 41 0.3 3.6 4.5
1994 53 34 42 0.2 3.6 4.9
1995 58 26 50 0.4 2.7 5.4
1996 50 29 39 0.2 3.1 4.1
1997 54 31 43 0.4 3.0 4.1
1998 45 28 34 0.6 2.7 3.4
1999 45 29 35 0.3 2.9 3.9
2000 41 32 25 0.2 3.1 2.9
2001 42 30 28 0.2 3.0 2.9
20022 61 41 43 0.5 4.0 4.0
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of females in the age group who first used the drug in the year, while the denominator is the person-time exposure of females in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.42C Standard Errors of Numbers (in Thousands) of Females Who First Used Cocaine in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 * * * * * *
1966 * * * * * *
1967 * * * * * *
1968 * * * * * *
1969 19 * 16 1.7 * 1.0
1970 34 * 30 0.7 * 2.3
1971 19 * 18 1.3 * 1.3
1972 36 18 32 1.3 1.5 1.9
1973 41 17 35 1.5 1.3 1.9
1974 65 22 58 1.3 1.8 2.6
1975 49 22 43 0.6 1.8 2.6
1976 55 16 53 0.5 1.3 3.5
1977 45 24 39 0.7 1.9 2.2
1978 56 21 52 0.4 1.8 3.2
1979 49 24 43 0.4 2.1 2.6
1980 61 26 56 0.7 2.3 2.6
1981 58 25 53 0.6 2.3 3.1
1982 55 27 48 0.5 2.5 2.9
1983 62 23 59 0.6 2.2 3.6
1984 57 15 54 0.7 1.4 2.9
1985 55 26 52 0.6 2.5 2.9
1986 46 19 44 0.6 1.9 2.5
1987 49 23 45 0.5 2.3 3.1
1988 45 16 42 0.5 1.6 2.6
1989 45 15 43 0.5 1.5 2.8
1990 39 19 35 0.6 2.0 2.3
1991 33 15 29 0.6 1.5 1.9
1992 36 18 32 1.0 1.8 1.7
1993 30 12 27 0.7 1.2 1.8
1994 37 8 37 1.0 0.7 2.5
1995 33 10 31 0.5 1.0 2.1
1996 28 13 26 0.6 1.1 1.5
1997 27 12 23 0.4 1.0 1.6
1998 30 10 28 0.6 0.9 1.7
1999 28 12 24 0.7 1.0 1.3
2000 26 10 24 0.5 0.9 1.5
2001 30 14 26 1.1 1.2 1.4
20022 42 17 39 0.6 1.4 1.7
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of females in the age group who first used the drug in the year, while the denominator is the person-time exposure of females in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.43C Standard Errors of Numbers (in Thousands) of Females Who First Used Crack in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 * * * * * *
1966 * * * * * *
1967 * * * * * *
1968 * * * * * *
1969 * * * * * *
1970 * * * * * *
1971 * * * * * *
1972 * * * * * *
1973 * * * * * *
1974 * * * * * *
1975 * * * * * *
1976 * * * * * *
1977 14 * 13 * * 0.8
1978 * * * * * *
1979 14 * 14 0.8 * 0.9
1980 10 * 9 1.1 * 0.5
1981 20 * 20 0.7 * 1.2
1982 15 * 10 1.7 * 0.4
1983 21 * 20 1.2 * 0.9
1984 24 * 24 1.2 * 1.2
1985 26 * 25 1.8 * 1.0
1986 23 * 21 1.5 * 1.0
1987 18 10 14 0.9 1.0 0.9
1988 26 9 25 1.9 0.9 0.9
1989 31 * 30 0.9 * 1.6
1990 30 * 29 1.0 * 1.1
1991 20 * 19 1.1 * 1.0
1992 25 9 23 1.1 0.9 0.9
1993 21 6 20 1.3 0.6 0.8
1994 28 5 28 2.2 0.4 1.6
1995 22 5 22 1.4 0.4 1.0
1996 24 6 23 1.1 0.5 1.1
1997 23 6 23 2.3 0.5 1.1
1998 16 5 15 1.2 0.5 0.8
1999 22 5 21 1.3 0.4 0.5
2000 20 6 19 1.6 0.5 0.6
2001 21 5 20 2.5 0.4 0.4
20022 28 9 26 1.5 0.7 0.6
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of females in the age group who first used the drug in the year, while the denominator is the person-time exposure of females in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.44C Standard Errors of Numbers (in Thousands) of Females Who First Used Heroin in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 * * * * * *
1966 * * * * * *
1967 * * * * * *
1968 * * * * * *
1969 * * * * * *
1970 * * * * * *
1971 * * * * * *
1972 18 6 * 1.3 0.5 *
1973 16 8 * 0.8 0.7 *
1974 25 * 16 1.6 * 1.1
1975 10 * 6 * * 0.4
1976 * * * * * *
1977 * * * * * *
1978 13 * * * * *
1979 * * * * * *
1980 8 * 8 * * *
1981 21 * 19 1.3 * 1.1
1982 * * * * * *
1983 9 * 9 * * 0.5
1984 16 * 14 1.8 * 0.5
1985 * * * * * *
1986 10 * * * * *
1987 13 * 13 1.2 * 0.7
1988 8 * 8 * * 0.5
1989 13 * 13 2.1 * *
1990 * * * * * *
1991 * * * * * *
1992 7 * 6 1.6 * 0.3
1993 12 * 11 1.5 * *
1994 12 4 * 3.5 0.4 *
1995 16 4 16 2.3 0.3 0.5
1996 11 3 11 2.0 0.3 *
1997 10 4 9 3.7 0.3 0.3
1998 12 3 12 1.0 0.3 0.8
1999 9 5 8 1.5 0.4 0.4
2000 8 5 6 0.7 0.4 0.4
2001 12 5 10 1.4 0.4 0.5
20022 13 3 12 1.6 0.3 0.2
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of females in the age group who first used the drug in the year, while the denominator is the person-time exposure of females in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.45C Standard Errors of Numbers (in Thousands) of Females Who First Used Hallucinogens in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 * * * * * *
1966 28 * * * * *
1967 21 * 19 1.7 * 1.3
1968 36 28 24 0.8 2.5 1.9
1969 57 35 45 0.8 3.0 3.3
1970 47 30 36 0.4 2.6 2.8
1971 55 29 46 0.9 2.5 3.5
1972 49 34 35 0.5 2.8 2.8
1973 41 30 29 0.4 2.3 2.1
1974 41 28 29 0.7 2.2 1.8
1975 42 33 29 0.5 2.7 1.9
1976 45 29 36 0.6 2.4 2.3
1977 47 31 35 0.6 2.6 2.4
1978 46 33 31 0.5 2.9 2.1
1979 40 31 25 0.5 2.7 1.7
1980 39 27 30 0.3 2.4 2.0
1981 53 33 40 0.6 3.1 2.6
1982 54 29 45 1.7 2.7 1.8
1983 34 17 29 0.4 1.6 2.0
1984 37 17 34 0.6 1.6 2.1
1985 39 26 28 0.6 2.4 1.8
1986 46 26 35 0.5 2.5 2.2
1987 34 25 24 0.5 2.5 1.6
1988 29 19 21 0.5 2.0 1.5
1989 36 22 29 0.4 2.3 2.1
1990 32 20 25 0.9 2.1 1.6
1991 32 20 26 0.5 2.1 1.7
1992 36 21 28 0.7 2.1 1.8
1993 31 15 27 0.7 1.5 1.6
1994 36 15 33 0.5 1.4 2.4
1995 32 16 27 0.4 1.5 2.0
1996 33 16 27 0.4 1.5 1.9
1997 30 16 25 0.4 1.4 1.9
1998 33 15 29 0.4 1.3 2.0
1999 31 18 24 0.3 1.5 1.9
2000 37 18 32 0.3 1.6 2.3
2001 40 21 34 0.4 1.8 2.0
20022 37 26 35 0.7 2.2 1.7
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of females in the age group who first used the drug in the year, while the denominator is the person-time exposure of females in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.46C Standard Errors of Numbers (in Thousands) of Females Who First Used LSD in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 * * * * * *
1966 * * * * * *
1967 18 * 15 * * 0.9
1968 33 27 20 0.4 2.4 *
1969 54 33 42 0.6 2.8 3.3
1970 44 27 35 0.4 2.3 2.8
1971 53 20 48 1.0 1.7 3.1
1972 48 33 35 0.6 2.7 2.3
1973 43 27 33 1.0 2.1 2.1
1974 36 26 25 0.4 2.1 1.8
1975 40 31 25 0.8 2.5 1.3
1976 31 19 24 0.7 1.6 1.4
1977 46 30 36 0.8 2.5 2.3
1978 38 24 28 0.6 2.0 1.7
1979 37 30 22 0.4 2.6 1.4
1980 29 20 21 0.4 1.8 1.3
1981 47 31 34 0.6 2.9 2.0
1982 43 25 34 1.5 2.3 1.5
1983 30 17 24 0.6 1.5 1.6
1984 32 16 28 0.4 1.5 1.9
1985 34 22 25 1.2 2.0 1.4
1986 31 21 23 0.7 2.0 1.5
1987 33 27 17 0.5 2.7 1.2
1988 23 15 17 0.6 1.6 1.1
1989 28 18 22 0.5 1.9 1.4
1990 28 18 22 0.8 1.9 1.4
1991 28 20 20 0.4 2.1 1.5
1992 34 20 26 0.5 2.0 1.8
1993 25 14 20 0.4 1.4 1.3
1994 34 14 30 0.6 1.4 2.2
1995 24 13 21 0.3 1.2 1.6
1996 31 14 25 0.3 1.3 1.8
1997 23 14 18 0.4 1.3 1.3
1998 22 13 18 0.4 1.1 1.3
1999 18 13 13 0.2 1.1 1.0
2000 27 14 23 0.5 1.2 1.3
2001 19 13 14 0.4 1.1 0.9
20022 12 9 8 0.3 0.8 0.6
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of females in the age group who first used the drug in the year, while the denominator is the person-time exposure of females in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.47C Standard Errors of Numbers (in Thousands) of Females Who First Used PCP in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 * * * * * *
1966 * * * * * *
1967 * * * * * *
1968 * * * * * *
1969 20 13 * * 1.1 *
1970 20 12 * 0.9 1.0 *
1971 17 11 14 1.1 0.9 1.0
1972 38 24 * 2.6 2.0 0.8
1973 30 20 21 0.6 1.6 1.5
1974 25 18 17 0.5 1.5 1.2
1975 30 24 23 0.9 1.9 1.2
1976 29 22 23 1.4 1.8 1.0
1977 22 15 20 1.2 1.2 0.9
1978 26 21 18 0.8 1.8 1.0
1979 23 16 14 0.9 1.4 0.8
1980 19 11 15 0.8 1.0 0.9
1981 27 11 25 1.2 1.0 1.4
1982 16 9 13 0.9 0.8 0.8
1983 14 9 * 1.3 0.9 *
1984 17 * * * * *
1985 12 * * 1.0 * *
1986 19 12 15 0.6 1.2 *
1987 11 4 10 1.3 0.4 0.6
1988 11 * * 1.2 * *
1989 15 11 * 0.7 1.2 *
1990 12 8 9 3.5 0.9 *
1991 7 * * 1.8 * *
1992 10 7 7 0.8 0.7 0.5
1993 9 4 * 2.7 0.3 *
1994 7 5 4 0.5 0.5 0.3
1995 16 5 15 0.5 0.5 1.0
1996 17 7 15 1.6 0.6 0.8
1997 10 6 8 0.7 0.5 0.6
1998 8 4 7 1.0 0.4 0.4
1999 9 6 7 0.4 0.5 0.5
2000 8 7 5 0.4 0.5 0.3
2001 9 7 6 0.5 0.6 0.4
20022 8 8 3 0.4 0.6 0.2
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of females in the age group who first used the drug in the year, while the denominator is the person-time exposure of females in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.48C Standard Errors of Numbers (in Thousands) of Females Who First Used Ecstasy in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 * * * * * *
1966 * * * * * *
1967 * * * * * *
1968 * * * * * *
1969 * * * * * *
1970 * * * * * *
1971 * * * * * *
1972 * * * * * *
1973 * * * * * *
1974 * * * * * *
1975 * * * * * *
1976 * * * * * *
1977 * * * * * *
1978 * * * * * *
1979 * * * * * *
1980 * * * * * *
1981 * * * * * *
1982 * * * * * *
1983 14 * 12 * * 0.7
1984 * * * 3.3 * 0.3
1985 19 * 18 1.0 * 1.1
1986 19 * 18 1.0 * 1.0
1987 19 5 18 2.2 0.5 1.0
1988 16 8 14 0.7 0.9 0.8
1989 16 * 15 0.6 * 1.0
1990 21 9 18 1.2 0.9 1.1
1991 21 6 20 1.1 * 1.2
1992 21 7 20 1.0 0.7 1.0
1993 18 8 14 1.8 0.8 0.9
1994 21 6 20 1.3 0.5 1.0
1995 27 6 26 1.6 0.6 1.6
1996 22 8 20 0.8 0.7 1.2
1997 29 8 28 0.6 0.7 2.0
1998 34 10 32 0.6 0.9 1.8
1999 34 14 31 0.6 1.1 1.6
2000 40 15 36 0.4 1.3 2.1
2001 43 18 38 0.4 1.5 2.0
20022 43 22 39 0.6 1.8 1.7
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of females in the age group who first used the drug in the year, while the denominator is the person-time exposure of females in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.49C Standard Errors of Numbers (in Thousands) of Females Who First Used Inhalants in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 * * * * * *
1966 * * * * * *
1967 6 6 * * 0.5 *
1968 14 12 * 1.6 1.0 *
1969 16 16 * 0.7 1.4 *
1970 22 20 * 0.7 1.6 *
1971 22 13 17 0.6 1.1 1.3
1972 26 23 13 0.9 1.8 0.9
1973 35 16 31 2.9 1.3 1.2
1974 24 17 18 0.9 1.3 1.2
1975 30 19 23 0.7 1.5 1.6
1976 37 20 32 0.9 1.6 1.9
1977 45 21 39 0.9 1.8 2.5
1978 36 23 26 0.9 1.9 1.5
1979 34 26 21 0.7 2.2 1.3
1980 31 25 18 0.5 2.2 1.1
1981 31 22 22 0.8 2.0 1.0
1982 28 20 19 1.1 1.8 1.0
1983 31 25 18 1.0 2.0 1.0
1984 28 21 19 1.0 1.9 1.1
1985 29 20 21 0.8 2.0 1.3
1986 38 31 23 1.5 2.7 0.9
1987 30 19 24 1.5 1.8 1.1
1988 25 19 16 0.6 1.9 1.0
1989 26 15 19 2.4 1.6 1.3
1990 20 13 13 0.4 1.4 1.0
1991 26 21 15 0.5 2.2 1.0
1992 25 17 18 0.4 1.8 1.3
1993 23 12 19 0.6 1.2 1.2
1994 22 13 18 0.4 1.2 1.2
1995 22 12 18 0.5 1.1 1.3
1996 21 13 16 0.5 1.1 1.1
1997 20 13 14 0.3 1.1 1.0
1998 23 16 16 0.9 1.3 0.9
1999 25 16 20 0.7 1.3 1.1
2000 23 18 14 0.3 1.5 0.9
2001 22 18 12 0.2 1.6 0.9
20022 32 27 16 0.4 2.3 1.0
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of females in the age group who first used the drug in the year, while the denominator is the person-time exposure of females in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.50C Standard Errors of Numbers (in Thousands) of Females Who First Used Pain Relievers Nonmedically in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 * * * * * *
1966 17 * * * * *
1967 * * * * * *
1968 41 * 39 1.4 * 3.2
1969 25 17 * 1.4 1.5 *
1970 31 22 21 2.7 1.2 1.6
1971 37 13 34 2.3 1.1 1.6
1972 24 16 17 0.8 1.3 1.3
1973 41 18 36 1.3 1.4 1.9
1974 49 22 43 1.0 1.5 2.8
1975 38 20 32 1.9 1.6 1.4
1976 32 19 25 1.3 1.6 1.5
1977 32 11 30 0.8 0.9 2.0
1978 36 25 27 1.0 2.1 1.2
1979 33 26 20 2.1 2.2 0.8
1980 26 12 23 2.0 1.0 0.9
1981 33 14 30 1.0 1.3 1.5
1982 26 14 22 2.6 1.3 1.0
1983 42 22 36 1.1 2.0 1.8
1984 39 8 38 3.0 0.7 1.6
1985 39 16 35 1.9 1.5 1.2
1986 38 9 37 1.6 0.9 1.8
1987 41 15 39 2.1 1.4 1.6
1988 32 13 30 1.3 1.3 1.6
1989 37 12 38 1.2 1.2 1.6
1990 35 9 33 1.1 1.0 1.9
1991 38 15 36 1.4 1.5 1.6
1992 41 16 37 0.9 1.6 1.7
1993 41 15 33 0.9 1.5 1.8
1994 43 11 41 0.9 1.0 2.1
1995 35 12 32 0.8 1.1 1.7
1996 45 13 42 0.5 1.1 2.8
1997 45 15 42 0.9 1.3 2.1
1998 53 17 51 1.4 1.4 1.9
1999 55 16 52 1.1 1.4 2.0
2000 63 21 57 1.0 1.7 2.3
2001 51 24 45 0.6 2.0 1.7
20022 84 35 76 1.4 3.1 2.7
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of females in the age group who first used the drug in the year, while the denominator is the person-time exposure of females in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.51C Standard Errors of Numbers (in Thousands) of Females Who First Used Tranquilizers Nonmedically in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 * * * * * *
1966 * * * * * *
1967 * * * * * *
1968 27 9 26 0.7 0.8 2.1
1969 37 * 32 2.0 * *
1970 22 17 * 0.9 1.4 *
1971 18 13 13 1.1 1.1 0.9
1972 39 13 37 1.1 1.1 2.1
1973 40 22 33 1.1 1.8 2.1
1974 35 23 27 1.0 1.7 1.6
1975 36 19 30 0.7 1.5 2.0
1976 41 24 30 1.0 1.9 1.8
1977 32 19 25 1.1 1.6 1.5
1978 30 14 27 2.7 1.2 1.1
1979 36 16 33 1.1 1.4 1.4
1980 28 16 23 0.9 1.4 1.2
1981 36 14 33 1.1 1.3 1.8
1982 30 12 28 1.0 1.1 1.6
1983 26 10 23 1.4 1.0 1.2
1984 36 15 33 1.6 1.4 1.4
1985 38 13 36 2.2 1.3 1.5
1986 28 11 26 1.3 1.0 1.4
1987 32 8 31 1.2 0.7 1.2
1988 38 4 37 1.4 0.4 1.4
1989 33 8 32 1.5 0.9 1.4
1990 30 12 27 1.2 1.2 1.3
1991 37 8 36 1.7 0.8 1.2
1992 39 6 38 2.8 0.6 1.1
1993 43 13 42 2.8 1.3 1.2
1994 31 6 31 1.6 0.6 1.3
1995 44 8 43 1.2 0.8 1.5
1996 35 9 33 0.8 0.8 1.8
1997 24 9 22 1.1 0.8 1.2
1998 41 11 40 1.7 0.9 1.3
1999 37 11 35 0.6 0.9 1.4
2000 57 13 55 1.2 1.1 1.9
2001 45 15 42 0.9 1.2 1.3
20022 60 20 57 1.3 1.7 1.6
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of females in the age group who first used the drug in the year, while the denominator is the person-time exposure of females in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.52C Standard Errors of Numbers (in Thousands) of Females Who First Used Stimulants Nonmedically in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 27 * 27 1.3 * 2.2
1966 24 * 20 1.0 * 1.7
1967 28 14 24 1.3 1.5 1.9
1968 55 34 41 0.5 3.1 3.4
1969 39 26 31 0.5 2.2 2.6
1970 50 26 42 0.9 2.3 3.0
1971 29 15 25 0.8 1.3 1.8
1972 36 25 26 1.0 2.1 1.8
1973 40 25 31 0.6 2.1 2.0
1974 36 21 29 0.5 1.7 2.1
1975 35 26 23 0.8 1.9 1.6
1976 41 26 31 1.3 2.1 1.8
1977 46 35 29 0.6 2.9 1.7
1978 34 20 27 0.6 1.7 1.6
1979 34 25 23 0.5 2.1 1.5
1980 37 24 27 0.4 2.1 1.7
1981 36 21 29 0.8 2.0 1.5
1982 36 22 26 0.6 2.0 1.5
1983 40 23 33 1.3 2.2 1.3
1984 28 16 21 0.5 1.5 1.3
1985 27 14 23 0.9 1.3 1.0
1986 31 15 27 0.8 1.5 1.7
1987 27 17 21 1.0 1.7 1.1
1988 31 21 22 0.8 2.2 1.4
1989 26 12 22 0.8 1.3 1.2
1990 26 8 25 1.4 0.8 1.5
1991 29 12 26 1.2 1.3 1.4
1992 23 14 18 1.1 1.4 0.8
1993 31 10 29 0.8 1.0 1.7
1994 28 11 25 1.0 1.0 1.4
1995 25 12 22 0.8 1.1 1.4
1996 35 11 33 0.9 1.0 2.1
1997 27 11 25 0.8 0.9 1.1
1998 24 12 21 1.0 1.0 1.1
1999 29 11 26 0.8 1.0 1.0
2000 29 14 25 0.7 1.1 1.4
2001 27 16 20 0.5 1.3 1.1
20022 46 19 41 1.4 1.6 1.3
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of females in the age group who first used the drug in the year, while the denominator is the person-time exposure of females in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.53C Standard Errors of Numbers (in Thousands) of Females Who First Used Methamphetamines Nonmedically in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 * * * * * *
1966 * * * * * *
1967 * * * * * *
1968 33 * * * * *
1969 30 12 * 0.7 1.0 *
1970 32 * 26 0.7 * 2.0
1971 22 12 18 0.6 1.0 1.4
1972 22 18 16 0.6 1.5 1.2
1973 31 18 25 0.7 1.4 1.7
1974 21 12 18 0.6 0.9 1.2
1975 24 21 17 0.4 1.7 1.2
1976 26 20 16 0.6 1.6 1.0
1977 38 30 24 0.8 2.4 1.2
1978 24 17 17 0.7 1.4 1.1
1979 30 25 19 0.5 2.2 1.2
1980 22 16 14 0.4 1.5 0.9
1981 34 19 28 0.9 1.7 1.4
1982 26 16 21 0.6 1.4 1.2
1983 29 18 22 1.2 1.7 1.1
1984 25 15 16 0.5 1.4 1.1
1985 22 12 18 1.2 1.2 0.9
1986 26 13 23 0.9 1.3 1.4
1987 24 16 18 1.2 1.6 0.9
1988 22 12 18 0.8 1.3 1.2
1989 21 9 19 0.9 1.0 1.1
1990 21 7 19 0.9 0.7 1.2
1991 25 8 24 1.0 0.8 1.4
1992 21 14 16 1.4 1.4 0.6
1993 28 10 25 1.0 1.0 1.4
1994 24 10 20 1.1 0.9 1.3
1995 23 9 22 1.0 0.9 1.3
1996 27 9 25 0.7 0.8 1.8
1997 16 8 14 0.8 0.7 0.8
1998 16 8 14 0.6 0.7 1.0
1999 16 6 15 1.3 0.5 0.6
2000 14 9 11 0.9 0.7 0.6
2001 14 9 10 0.3 0.8 0.7
20022 32 12 29 1.7 0.9 0.5
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of females in the age group who first used the drug in the year, while the denominator is the person-time exposure of females in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.54C Standard Errors of Numbers (in Thousands) of Females Who First Used Sedatives Nonmedically in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 * * * * * *
1966 * * * * * *
1967 32 * * 1.7 * *
1968 34 * 21 0.7 * 1.7
1969 33 25 * 3.2 2.2 *
1970 35 27 23 0.6 2.3 1.8
1971 37 15 34 2.2 1.3 1.6
1972 22 14 17 0.9 1.1 1.2
1973 33 25 21 0.4 2.0 1.5
1974 40 20 35 0.7 1.6 2.4
1975 33 19 28 1.9 1.5 1.4
1976 26 22 15 0.4 1.8 1.0
1977 38 22 31 0.7 1.8 1.8
1978 37 26 32 1.8 2.2 1.1
1979 32 19 26 1.3 1.6 1.3
1980 29 14 25 1.0 1.2 1.2
1981 33 11 31 2.8 1.0 1.3
1982 37 20 32 3.1 1.8 1.0
1983 24 8 23 1.2 0.7 1.2
1984 20 * 18 1.6 * 0.9
1985 16 * 14 2.2 * 0.6
1986 13 * 8 1.6 * 0.5
1987 18 * 18 3.1 * *
1988 * * * * * *
1989 16 * 15 1.8 * 0.9
1990 18 * 17 2.0 * *
1991 12 3 * 5.0 0.3 0.3
1992 14 5 13 1.8 0.5 *
1993 12 4 11 3.9 0.4 0.6
1994 11 3 10 3.3 0.3 0.4
1995 14 3 14 1.5 0.3 0.7
1996 15 5 14 2.9 0.5 0.6
1997 11 3 10 1.2 0.2 0.6
1998 18 5 17 6.3 0.4 0.5
1999 20 4 20 5.0 0.3 0.5
2000 17 6 15 1.7 0.5 0.4
2001 21 8 19 2.4 0.7 0.4
20022 44 9 43 3.8 0.7 0.8
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of females in the age group who first used the drug in the year, while the denominator is the person-time exposure of females in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.55C Standard Errors of Numbers (in Thousands) of Females Who First Used Alcohol in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 122 74 98 0.4 7.5 22.8
1966 107 67 83 0.3 6.8 19.6
1967 134 86 98 0.3 8.9 21.7
1968 126 83 94 0.3 8.4 20.9
1969 132 89 96 0.2 8.8 22.6
1970 133 75 108 0.3 7.4 23.4
1971 110 66 85 0.3 6.3 19.9
1972 128 72 106 0.5 7.1 26.9
1973 101 74 76 0.3 7.4 17.9
1974 107 80 71 0.5 8.0 17.4
1975 102 77 69 0.4 7.6 16.5
1976 104 78 66 0.4 7.9 16.0
1977 109 81 73 0.3 8.5 18.9
1978 100 81 57 0.2 8.7 15.3
1979 99 77 65 0.3 9.0 18.1
1980 101 74 69 0.4 8.5 17.9
1981 101 74 71 0.3 8.8 19.6
1982 98 74 59 0.4 9.1 17.1
1983 91 68 56 0.4 8.3 16.6
1984 97 72 62 0.3 9.4 19.8
1985 93 68 63 0.6 8.5 18.2
1986 89 67 56 0.3 8.6 18.8
1987 82 60 56 0.5 8.2 16.8
1988 84 64 56 0.2 8.8 17.9
1989 90 69 58 0.2 9.1 17.8
1990 80 59 55 0.3 8.5 18.3
1991 73 49 55 0.4 6.9 18.4
1992 79 54 56 0.3 6.7 17.1
1993 72 55 47 0.3 6.8 15.2
1994 65 38 51 0.2 4.4 17.5
1995 60 35 49 0.3 4.1 17.7
1996 61 36 47 0.3 4.1 15.8
1997 59 41 40 0.2 4.5 13.5
1998 57 39 38 0.3 4.5 11.8
1999 58 40 40 0.3 4.5 12.1
2000 65 43 45 0.2 5.1 14.8
20012   85 62 57 0.3 7.8 18.3
20022 -- -- 61 -- 8.1 20.7
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of females in the age group who first used the drug in the year, while the denominator is the person-time exposure of females in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.56C Numbers (in Thousands) of Females Who First Used Alcohol in the United States by Underage and Legal Drinking Age Groups, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 21 21 or Older 12–20 21–25
1965 122 98 73 0.4 8.3 33.3
1966 107 89 59 0.3 7.3 30.8
1967 134 127 61 0.3 10.3 30.4
1968 126 114 55 0.3 9.1 24.7
1969 132 108 74 0.2 8.8 39.4
1970 133 106 76 0.3 8.5 36.5
1971 110 90 61 0.3 7.3 27.4
1972 128 91 93 0.5 7.5 50.1
1973 101 90 58 0.3 7.4 27.1
1974 107 93 57 0.5 7.6 25.4
1975 102 88 54 0.4 7.2 23.7
1976 104 92 49 0.4 7.9 21.6
1977 109 93 62 0.3 8.2 27.8
1978 100 91 43 0.2 8.2 21.5
1979 99 91 43 0.3 9.0 21.8
1980 101 90 47 0.4 8.7 18.7
1981 101 91 48 0.3 9.0 20.1
1982 98 88 41 0.4 8.9 19.0
1983 91 83 36 0.4 8.5 17.5
1984 97 84 43 0.3 9.1 23.7
1985 93 77 49 0.6 8.3 22.8
1986 89 81 37 0.3 8.8 23.0
1987 82 72 38 0.5 8.2 17.8
1988 84 73 41 0.2 8.3 27.2
1989 90 84 40 0.2 9.2 24.4
1990 80 69 39 0.3 8.3 25.3
1991 73 61 37 0.4 7.1 24.3
1992 79 67 43 0.3 6.9 23.4
1993 72 64 33 0.3 6.8 19.8
1994 65 54 36 0.2 5.5 23.0
1995 60 49 38 0.3 5.0 24.4
1996 61 43 38 0.3 4.3 25.2
1997 59 48 34 0.2 4.6 23.5
1998 57 45 33 0.3 4.3 19.1
1999 58 45 33 0.3 4.3 20.1
2000 65 52 37 0.2 5.2 26.7
20012   85 73 45 0.3 7.7 25.8
20022 -- -- 43 -- 7.9 25.1
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of females in the age group who first used the drug in the year, while the denominator is the person-time exposure of females in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.57C Standard Errors of Numbers (in Thousands) of Females Who First Used Any Cigarettes in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 110 87 65 0.3 10.5 16.9
1966 97 77 59 0.4 9.1 12.9
1967 110 93 58 0.5 10.6 11.5
1968 111 80 75 0.3 9.0 15.6
1969 110 82 68 0.5 9.2 11.2
1970 96 70 69 0.3 7.4 13.7
1971 115 80 77 0.4 8.3 14.0
1972 108 84 67 0.3 8.6 12.8
1973 95 83 48 0.2 9.3 9.1
1974 95 80 58 0.3 9.1 10.9
1975 110 86 67 0.3 10.4 12.3
1976 95 79 57 0.3 9.6 9.8
1977 86 71 48 0.3 8.6 9.0
1978 85 73 47 0.3 9.2 7.2
1979 89 79 43 0.3 10.0 7.6
1980 87 61 58 0.4 8.5 9.4
1981 80 68 49 0.3 8.6 8.3
1982 77 67 38 0.3 8.6 6.4
1983 80 65 46 0.9 8.6 7.6
1984 75 67 32 0.2 9.2 6.5
1985 74 67 35 0.2 8.5 7.3
1986 70 61 35 0.3 8.8 7.2
1987 67 58 35 0.2 7.8 7.3
1988 70 53 43 0.2 7.7 8.3
1989 74 60 40 0.4 8.6 7.3
1990 62 51 35 0.3 7.2 6.5
1991 61 49 36 0.3 7.1 6.5
1992 62 46 43 0.3 6.2 7.7
1993 60 42 41 0.2 5.5 7.4
1994 48 33 33 0.2 4.0 5.9
1995 52 38 38 0.2 4.9 7.5
1996 51 36 36 0.2 4.3 6.8
1997 50 37 33 0.2 4.5 6.5
1998 48 39 28 0.2 4.8 5.0
1999 48 35 32 0.3 4.4 5.3
2000 47 34 33 0.3 4.0 5.0
20012   58 45 32 0.3 5.2 6.1
20022 -- -- 34 -- 5.2 5.8
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of females in the age group who first used the drug in the year, while the denominator is the person-time exposure of females in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.58C Standard Errors of Numbers (in Thousands) of Females Who Began Daily Cigarette Use in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 91 51 76 0.5 5.0 10.0
1966 68 35 58 0.6 3.3 7.6
1967 73 54 46 0.3 5.2 5.8
1968 78 43 66 0.7 3.9 7.4
1969 86 38 76 0.4 3.2 8.4
1970 88 41 79 0.7 3.6 6.8
1971 81 45 63 0.4 3.9 6.1
1972 78 43 65 0.3 3.8 6.7
1973 79 52 62 0.4 4.6 5.5
1974 74 53 52 0.3 4.5 5.0
1975 93 52 74 0.5 4.6 7.0
1976 74 54 52 0.4 4.9 4.1
1977 75 53 54 0.5 4.9 4.5
1978 70 45 54 0.6 4.2 4.5
1979 75 50 55 0.4 4.7 4.4
1980 75 45 60 0.6 4.2 4.2
1981 72 48 54 0.5 4.7 4.0
1982 70 50 48 0.4 4.9 4.3
1983 58 41 42 0.5 4.0 3.6
1984 52 38 38 0.4 4.0 3.3
1985 54 40 35 0.3 4.2 3.3
1986 55 43 35 0.6 4.5 2.6
1987 50 32 37 0.6 3.3 3.0
1988 51 30 42 0.7 3.3 3.5
1989 50 34 37 0.6 3.7 3.3
1990 53 35 38 0.3 3.8 3.5
1991 58 34 48 1.0 3.7 4.2
1992 51 29 40 0.5 3.1 3.5
1993 45 32 31 0.3 3.3 2.9
1994 51 22 46 0.4 2.2 3.9
1995 46 28 35 0.3 2.8 3.2
1996 48 24 42 0.4 2.3 3.7
1997 43 23 35 0.5 2.2 3.2
1998 37 22 30 0.3 2.1 2.4
1999 46 24 37 0.7 2.2 2.6
2000 41 20 34 0.4 1.9 2.8
2001 35 20 28 0.6 1.9 1.8
20022 45 22 41 0.9 2.0 2.1
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of females in the age group who first used the drug in the year, while the denominator is the person-time exposure of females in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.59C Standard Errors of Numbers (in Thousands) of Females Who First Used Smokeless Tobacco in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 23 14 * 4.2 1.0 *
1966 19 16 * 3.5 * *
1967 26 26 * 1.9 * *
1968 28 18 * 2.7 1.1 *
1969 18 15 * 1.6 * *
1970 24 17 * 1.6 1.3 *
1971 23 20 11 1.3 1.4 *
1972 26 25 * 1.2 1.4 *
1973 36 27 * 1.3 2.2 *
1974 21 14 * 2.0 1.1 *
1975 32 16 27 4.8 0.9 0.8
1976 24 23 17 1.3 1.7 *
1977 20 16 12 1.4 1.2 0.5
1978 28 26 11 0.7 2.0 0.7
1979 25 20 14 0.8 1.3 0.9
1980 34 20 26 4.0 1.7 1.0
1981 28 23 16 1.0 2.0 0.8
1982 24 19 14 0.6 1.5 0.9
1983 30 27 14 0.7 2.4 0.7
1984 29 25 15 0.6 2.2 1.0
1985 31 20 24 1.0 1.9 1.4
1986 26 23 13 0.6 2.3 0.8
1987 29 22 17 1.0 2.2 1.0
1988 25 21 12 0.6 2.0 0.8
1989 24 17 16 0.7 1.8 1.1
1990 25 20 17 0.4 2.1 1.3
1991 21 14 16 1.7 1.4 0.8
1992 25 14 19 0.8 1.4 1.2
1993 26 12 21 0.7 1.2 1.4
1994 28 12 24 0.7 1.1 1.7
1995 22 10 20 2.2 0.9 1.1
1996 16 12 11 0.8 1.1 0.8
1997 17 10 14 1.2 0.9 1.0
1998 21 10 18 0.8 0.9 0.8
1999 17 11 12 0.5 0.9 0.8
2000 15 10 11 0.9 0.8 0.5
2001 17 11 13 0.9 0.9 0.8
20022 27 15 21 0.7 1.2 1.0
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of females in the age group who first used the drug in the year, while the denominator is the person-time exposure of females in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

40618

Table  4.60C Standard Errors of Numbers (in Thousands) of Females Who First Used Cigars in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2002, Based on 2002 and 2003 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN
AGE
AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12–17 18–25
1965 27 15 22 1.5 * 2.0
1966 35 15 32 1.9 1.3 2.9
1967 35 16 31 1.2 1.4 2.5
1968 37 13 34 0.9 1.1 2.7
1969 34 16 30 0.9 1.3 2.2
1970 52 18 49 1.3 1.5 3.4
1971 41 21 35 1.2 1.6 2.3
1972 40 27 28 0.8 2.2 1.6
1973 40 24 32 0.7 1.9 2.3
1974 50 18 48 1.5 1.4 2.1
1975 55 29 46 1.6 2.1 2.6
1976 50 20 46 2.0 1.6 1.6
1977 42 20 35 0.7 1.6 2.2
1978 41 17 37 0.9 1.5 2.0
1979 35 15 30 1.3 1.3 1.7
1980 45 14 42 1.1 1.1 2.1
1981 42 13 38 0.8 1.2 1.4
1982 45 20 40 0.9 1.8 2.1
1983 37 21 31 0.9 1.9 1.3
1984 35 13 33 0.9 1.1 1.8
1985 37 16 33 0.9 1.5 1.9
1986 29 15 25 0.7 1.5 1.4
1987 44 11 43 2.7 1.1 1.8
1988 64 13 62 1.5 1.3 2.2
1989 43 17 40 1.1 1.7 2.0
1990 38 17 34 1.1 1.8 1.7
1991 40 13 38 0.9 1.5 1.7
1992 52 14 49 1.1 1.4 2.2
1993 50 11 48 0.9 1.1 2.0
1994 65 20 62 0.7 1.9 3.5
1995 59 18 56 0.8 1.6 3.5
1996 69 18 66 0.6 1.6 3.7
1997 66 21 63 0.5 1.9 3.8
1998 74 23 70 0.7 2.0 3.5
1999 63 22 58 0.5 2.0 3.1
2000 66 22 62 0.7 2.0 2.7
2001 53 24 46 0.5 2.1 2.0
20022 78 28 73 0.8 2.5 2.9
*Low precision; no estimate reported.
-- Not available.
NOTE: Comparisons between years, particularly between recent estimates and those from 10 or more years prior, should be made with caution due to potential reporting and other biases.
1 The numerator of each rate is the number of females in the age group who first used the drug in the year, while the denominator is the person-time exposure of females in the age group measured in thousands of years.
2 Estimated using 2003 data only.
Source: SAMHSA, Office of Applied Studies, National Survey on Drug Use and Health, 2002 and 2003.

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