NATIONAL INSTITUTE ON DRUG ABUSE EPIDEMIOLOGIC ...

EPIDEMIOLOGIC TRENDS IN DRUG ABUSE—SISVEA
Exhibit 4. Demographic Characteristics of NGC Patients, by First Drug of Use and Percent:
January–June 2004
Total Marijuana Inhalants Alcohol Cocaine 1 Demographic
Heroin Tobacco
Characteric N=20,324 n=5,436 n=2,243 n=6,123 n=1,273 n=422 n=3,838
Gender
Age
Male 93.0 95.5 92.4 91.6 91.3 92.2 92.6
Female 7.0 4.5 7.6 8.4 8.7 7.8 7.4
5–14 years 2.2 1.9 7.4 1.1 0.9 1.9
15–19 15.5 16.9 31.6 9.6 18.5 4.7 13.8
20–24 19.3 22.7 23.8 13.9 23.6 14.7 19.6
25–29 18.4 20.0 16.5 16.8 21.9 23.5 18.2
30–34 15.5 15.5 9.5 16.4 18.3 18.0 16.3
35 and older 29.1 23.1 11.1 42.2 16.7 39.1 30.3
Schooling
Elementary school 37.8 36.8 58.7 33.3 31.5 40.5 36.1
Middle school 36.0 41.1 29.0 31.3 39.5 37.4 39.1
High school 16.9 16.4 4.3 20.3 22.0 14.9 18.1
College studies 4.8 2.5 0.7 8.8 5.0 3.4 4.0
No formal education 4.2 3.0 7.2 5.7 1.7 3.8 2.4
Other 0.3 0.2 0.6 0.3 0.2
Marital Status
Single 53.9 59.4 71.7 42.6 50.4 54.7 54.7
Married 23.3 18.6 11.0 32.4 28.3 17.5 21.8
Divorced 3.8 3.6 1.7 5.0 2.6 4.3 3.8
Widowed 1.0 0.6 0.4 1.6 0.6 1.2 0.9
Living together 11.9 11.9 10.9 11.4 12.5 12.5 12.7
Other 6.2 5.9 4.2 7.0 5.6 9.8 6.1
Age of Onset
9 and younger 5.8 4.5 9.7 4.3 1.0 1.7 9.8
10–14 43.3 48.0 58.8 35.4 19.6 16.0 51.1
15–19 39.9 40.2 28.8 46.4 43.5 38.6 34.5
20–24 6.8 4.9 1.8 9.2 17.3 20.2 3.5
25–29 2.4 1.4 0.4 2.7 10.7 11.0 0.7
30–34 1.0 0.5 0.1 1.1 4.2 6.7 0.3
35 and older 0.9 0.4 0.3 0.9 3.7 6.0 0.3
Frequency
Daily 80.3 85.9 89.4 72 72.9 95.2 80.9
Once a week 15.7 11.4 8.0 21.9 21.4 3.8 15.7
1–3 times per month 3.2 2.0 2.0 4.9 4.3 1.0 2.8
1–11 times per year 0.9 0.7 0.5 1.2 1.3 0.7
1 Includes cocaine, basuco, and crack.
SOURCE: SISVEA—Nongovernment treatment centers
Proceedings of the Community Epidemiology Work Group, Vol. II, January 2005 311