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1998 National Household Survey on Drug Abuse:  Population Estimates

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Table 21A. Frequency of Cocaine Use During Past Year by Gender Within Age Group for Total Population in 1998

AGE/

/GENDER

At Least Once

 

12 or More Days

  

51 or More Days

Observed

Estimate

95% C.I.

  

Observed

Estimate

95% C.I.

  

Observed

Estimate

95% C.I.

RATE ESTIMATES (Percent)

12-17

1.7

(1.3

-

2.2)

  

0.6

(0.3

-

0.9)

  

0.3

(0.2

-

0.5)

    Male

1.3

(0.9

-

2.0)

  

0.4

(0.2

-

0.8)

  

0.2

(0.1

-

0.4)

    Female

2.0

(1.4

-

3.0)

  

0.8

(0.4

-

1.4)

  

0.4

(0.2

-

0.9)

 

18-25

4.7

(3.9

-

5.5)

  

1.1

(0.8

-

1.4)

  

0.5

(0.3

-

0.8)

    Male

5.9

(4.7

-

7.4)

  

1.5

(1.0

-

2.2)

  

0.6

(0.3

-

1.1)

    Female

3.4

(2.6

-

4.5)

  

0.6

(0.4

-

1.0)

  

0.4

(0.2

-

0.7)

 

26-34

2.7

(2.1

-

3.5)

  

1.0

(0.7

-

1.4)

  

0.5

(0.3

-

0.7)

    Male

3.6

(2.6

-

5.0)

  

0.9

(0.5

-

1.8)

  

0.5

(0.2

-

0.9)

    Female

1.9

(1.3

-

2.6)

  

1.0

(0.6

-

1.7)

  

0.4

(0.2

-

0.8)

   

$35

0.9

(0.7

-

1.2)

  

0.5

(0.3

-

0.8)

  

0.2

(0.1

-

0.3)

    Male

1.3

(0.9

-

1.8)

  

0.7

(0.4

-

1.2)

  

0.3

(0.1

-

0.6)

    Female

0.5

(0.3

-

0.9)

  

0.4

(0.2

-

0.7)

  

0.1

(0.0

-

0.3)

   

TOTAL

1.7

(1.5

-

2.0)

  

0.7

(0.5

-

0.8)

  

0.3

(0.2

-

0.4)

    Male

2.3

(1.9

-

2.7)

  

0.8

(0.6

-

1.1)

  

0.3

(0.2

-

0.5)

    Female

1.2

(1.0

-

1.5)

  

0.5

(0.4

-

0.7)

  

0.2

(0.1

-

0.3)

   

POPULATION ESTIMATES (In Thousands)

12-17

379

(285

-

503)

  

126

(78

-

203)

  

64

(35

-

115)

    Male

151

(100

-

227)

  

41

(19

-

91)

  

21

(9

-

46)

    Female

228

(155

-

333)

  

85

(48

-

150)

  

43

(19

-

95)

                             

18-25

1,306

(1,097

-

1,552)

  

301

(224

-

403)

  

133

(83

-

214)

    Male

834

(666

-

1,042)

  

214

(146

-

312)

  

83

(43

-

161)

    Female

472

(353

-

628)

  

87

(55

-

139)

  

50

(26

-

96)

     

26-34

942

(731

-

1,211)

  

342

(233

-

501)

  

156

(99

-

245)

    Male

618

(440

-

863)

  

161

(85

-

304)

  

78

(39

-

157)

    Female

324

(229

-

457)

  

181

(112

-

290)

  

78

(41

-

147)

     

$35

1,185

(888

-

1,579)

  

683

(451

-

1,031)

  

243

(136

-

433)

    Male

796

(555

-

1,141)

  

427

(248

-

734)

  

172

(81

-

365)

    Female

388

(242

-

622)

  

255

(136

-

479)

  

70

(27

-

185)

 

TOTAL

3,811

(3,342

-

4,344)

  

1,452

(1,158

-

1,819)

  

595

(445

-

797)

    Male

2,399

(2,027

-

2,837)

  

843

(615

-

1,155)

  

354

(232

-

541)

    Female

1,412

(1,147

-

1,736)

  

608

(443

-

834)

  

241

(162

-

358)

* Low precision; no estimate reported.

NOTE: "At Least Once" is equivalent to "Used Past Year" in Table 4.

Source: Office of Applied Studies, SAMHSA, National Household Survey on Drug Abuse, 1998

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This page was last updated on June 03, 2008.