1996 National Household Survey on Drug Abuse:  Preliminary Results

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70617 (202A)               PRELIMINARY DATA - AS OF JUNE 1997 

Table 46.Estimated Number (in Thousands) of Persons Who Began Daily Cigarette Use During Each Year 1962-1995, Their Mean Age at First Daily Use, and Annual Age-Specific Rates of First Daily Use (per 1000 Person-Years of Exposure), Based on 1994-1996 NHSDAs




AGE-SPECIFIC RATE OF FIRST USE1

YEAR

INITIATES

(1000s)

MEAN

AGE

12-17

18-25

26-34

1962

1561

17.6

49.9

134.2

13.0

1963

1555

18.5

52.7

98.0

30.2

1964

1413

18.7

33.7

104.9

22.4

1965

1605

17.9

40.2

117.9

2.8

1966

1850

17.9

44.7

131.4

7.2

1967

1850

18.9

45.9

118.0

16.1

1968

2244

18.4

53.8

149.2

4.1

1969

2083

17.9

57.8

121.1

22.1

1970

1863

17.3

49.1

102.6

8.6

1971

2166

17.8

61.7

111.9

10.4

1972

2067

18.1

57.6

101.3

28.0

1973

2234

18.1

60.9

104.6

31.6

1974

2542

19.1

71.7

111.8

26.0

1975

1910

18.2

55.3

89.3

12.6

1976

2023

18.0

58.6

97.3

15.9

1977

2118

18.3

59.7

104.9

12.8

1978

2019

18.5

61.4

89.7

14.4

1979

2004

18.7

53.9

103.1

16.1

1980

1642

18.9

51.0

78.7

10.1

1981

1767

19.4

56.3

76.4

12.0

1982

1639

19.0

49.2

78.7

14.6

1983

1518

18.1

46.1

71.6

14.1

1984

1574

18.6

53.8

69.0

10.4

1985

1527

18.8

52.0

71.7

6.3

1986

1562

17.8

57.4

74.3

8.6

1987

1494

18.6

52.1

68.7

12.5

1988

1297

18.1

51.6

55.7

12.6

1989

1411

19.1

52.8

59.3

7.3

1990

1565

18.4

61.1

66.3

16.4

1991

1416

17.8

60.2

55.3

10.0

1992

1584

18.2

60.8

65.4

12.2

1993

1558

18.5

59.2

62.4

9.9

19942

1650

17.5

67.6

60.7

11.9

19953

1677

17.6

61.9

64.4

14.1

*Low precision; no estimate reported.

**Estimate rounds to zero.

1The numerator of each rate equals the number of persons who first used the drug in the year (times 1000). The denominator of each rate equals the number of persons who were exposed to risk of first use during the year, weighted by their estimated exposure time measured in years. For example, for the age group 12-17 in 1990, the denominator is the sum of three components:

(1)those persons 12-17 years old in 1990 who first used the drug in 1989 or earlier, times a weight of zero. The weight is zero since they had zero exposure to the risk of first use in 1990.

(2)those who first used the drug in 1990 times a weight of .5. The weight of .5 assumes that these people, on average, first used the drug at midyear and consequently have a half year of exposure (i.e. the first half of the year.)

(3)those who never used, or those who first used the drug in 1991 or later, times a weight of one. The weight of one assumes their exposure to the risk of first use during 1990 was for the whole year.

Each person is also weighted by his/her sample weight.

2Estimated using 1995 and 1996 data only.

3Estimated using 1996 data only.

Source: SAMHSA, Office of Applied Studies, National Household Survey on Drug Abuse, 1994-1996.

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