Drug | UDS proportion (95% CI)* | CASI | ||
---|---|---|---|---|
Past 7 days | Past 6 months | Lifetime | ||
Any drugs | 53.5 (47.0-60.0) | 42.0‡ | 59.3 | 92.4 |
Marijuana | 36.0 (29.7-42.3) | 28.6‡ | 44.1 | 85.0 |
Cocaine | 25.8 (20.1-31.5) | 18.9‡ | 29.5 | 66.8 |
Opiates | 7.6 (4.1-10.1) | 7.5 | 18.5 | 43.8 |
Meth/amphetamine | 2.2 (0.3-4.1) | 1.8 | 6.2 | 25.2 |
Injection | N/A | 0.4 | 1.8 | 23.7 |