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1998 National Household Survey on Drug Abuse:  Population Estimates

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Table 20A. Frequency of Marijuana 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

14.1

(12.9

-

15.3)

 

7.6

(6.7

-

8.8)

 

4.8

(4.0

-

5.8)

    Male

14.4

(12.8

-

16.2)

 

8.2

(6.9

-

9.6)

 

5.2

(4.2

-

6.5)

    Female

13.7

(12.0

-

15.6)

 

7.1

(5.7

-

8.8)

 

4.3

(3.2

-

5.8)

 

18-25

24.1

(22.3

-

26.0)

 

14.0

(12.7

-

15.4)

 

9.1

(8.1

-

10.2)

    Male

28.1

(25.3

-

31.1)

 

17.4

(15.4

-

19.5)

 

12.2

(10.4

-

14.2)

    Female

20.0

(17.7

-

22.6)

 

10.5

(8.9

-

12.3)

 

6.0

(4.9

-

7.3)

 

26-34

9.7

(8.6

-

11.0)

 

4.8

(4.0

-

5.7)

 

3.2

(2.6

-

3.9)

    Male

13.0

(11.1

-

15.1)

 

6.8

(5.5

-

8.3)

 

4.5

(3.5

-

5.7)

    Female

6.5

(5.4

-

7.8)

 

2.8

(2.2

-

3.7)

 

1.9

(1.3

-

2.6)

   

$35

4.1

(3.5

-

4.7)

 

2.4

(1.9

-

2.9)

 

1.5

(1.2

-

2.1)

    Male

5.6

(4.6

-

6.8)

 

3.3

(2.6

-

4.2)

 

2.1

(1.5

-

2.9)

    Female

2.7

(2.2

-

3.5)

 

1.6

(1.1

-

2.2)

 

1.1

(0.7

-

1.7)

   

TOTAL

8.6

(8.0

-

9.2)

 

4.8

(4.4

-

5.3)

 

3.1

(2.7

-

3.5)

    Male

10.8

(10.0

-

11.6)

 

6.3

(5.6

-

7.0)

 

4.2

(3.6

-

4.8)

    Female

6.5

(5.9

-

7.2)

 

3.4

(3.0

-

3.9)

 

2.1

(1.8

-

2.5)

   

POPULATION ESTIMATES (In Thousands)

12-17

3,197

(2,928

-

3,486)

 

1,737

(1,514

-

1,990)

 

1,087

(901

-

1,308)

    Male

1,670

(1,481

-

1,878)

 

946

(800

-

1,116)

 

608

(491

-

752)

    Female

1,527

(1,336

-

1,742)

 

791

(639

-

976)

 

478

(351

-

649)

                             

18-25

6,739

(6,242

-

7,261)

 

3,905

(3,538

-

4,304)

 

2,549

(2,264

-

2,865)

    Male

3,966

(3,568

-

4,389)

 

2,454

(2,178

-

2,757)

 

1,721

(1,468

-

2,010)

    Female

2,773

(2,444

-

3,134)

 

1,452

(1,238

-

1,697)

 

828

(677

-

1,010)

     

26-34

3,362

(2,974

-

3,794)

 

1,655

(1,399

-

1,955)

 

1,096

(899

-

1,335)

    Male

2,227

(1,900

-

2,599)

 

1,160

(941

-

1,425)

 

769

(602

-

981)

    Female

1,135

(944

-

1,362)

 

495

(376

-

650)

 

327

(234

-

456)

     

$35

5,412

(4,651

-

6,293)

 

3,166

(2,585

-

3,875)

 

2,061

(1,540

-

2,754)

    Male

3,469

(2,853

-

4,209)

 

2,047

(1,592

-

2,626)

 

1,284

(911

-

1,806)

    Female

1,943

(1,532

-

2,460)

 

1,120

(811

-

1,544)

 

777

(512

-

1,175)

 

TOTAL

18,710

(17,454

-

20,048)

 

10,464

(9,523

-

11,493)

 

6,793

(6,002

-

7,683)

    Male

11,332

(10,477

-

12,247)

 

6,606

(5,917

-

7,370)

 

4,383

(3,812

-

5,034)

    Female

7,378

(6,679

-

8,146)

 

3,858

(3,377

-

4,403)

 

2,410

(2,034

-

2,853)

* Low precision; no estimate reported.

NOTE: "At Least Once" is equivalent to "Used Past Year" in Table 3.

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.