Table 1. Descriptive Statistics of Age, Sex, and Frequency of Substance Use Among American Indian/Alaska Native and Non-Hispanic White Adolescents, 2013 Youth Risk Behavior Surveya .
| Characteristic | American Indian/Alaska Native (n = 1,096) | Non-Hispanic White (n = 45,187) |
|---|---|---|
| Age, y | 16.0 (15.0–17.0) | 16.0 (15.0–17.0) |
| Male sex | 617 (56.6) | 23,517 (52.1) |
| Use of substance | ||
| Cigarettes | ||
| Past 30-day use | 388 (38.2) | 14,782 (33.7) |
| Frequency among users | 14.5 (4.0–30.0) | 14.5 (4.0–30.0) |
| Alcohol | ||
| Past 30-day use | 534 (54.2) | 22,632 (51.8) |
| Frequency among users | 4.0 (1.5–7.5) | 4.0 (1.5–7.5) |
| Marijuana | ||
| Lifetime use | 575 (54.8) | 17,952 (40.1) |
| Frequency among users | 29.5 (6.0–100.0) | 14.5 (6.0–69.5) |
| Cocaine | ||
| Lifetime use | 161 (15.2) | 3,620 (8.1) |
| Frequency among users | 14.5 (1.5–40) | 6.0 (1.5–14.5) |
| Inhalants | ||
| Lifetime use | 169 (21.1) | 5,438 (16.5) |
| Frequency among users | 6.0 (1.5–29.5) | 6.0 (1.5–6.0) |
| Heroin | ||
| Lifetime use | 32 (5.5) | 625 (2.7) |
| Frequency among users | 22.0 (6.0–40.0) | 1.5 (1.5–29.5) |
| Methamphetamine | ||
| Lifetime use | 90 (15.3) | 2,102 (9.1) |
| Frequency among users | 6.0 (1.5–29.5) | 6.0 (1.5–14.5) |
| Ecstasy | ||
| Lifetime use | 63 (13.6) | 1,713 (10.1) |
| Frequency among users | 1.5 (1.5–14.5) | 1.5 (1.5–6.0) |
| Steroids | ||
| Lifetime use | 96 (8.9) | 1,809 (4.0) |
| Frequency among users | 29.5 (4.9–40.0) | 6.0 (1.5–14.5) |
| Injected drugs | ||
| Lifetime use | 43 (5.3) | 721 (2.2) |
| Frequency among users | 2.0 (1.0–2.0) | 2.0 (1.0–2.0) |
a
Data source: Centers for Disease Control and Prevention (11). Frequency for cigarette and alcohol use was defined as the number of days used in the past 30 days. For all other substances, frequency refers to the number of days used in lifetime. Continuous variables are summarized as median (interquartile range). Categorical variables are summarized as number (percentage).