Table 3.
Rates of self-reported drug use and admission toxicology results for the total sample and by at-risk drinking
| Source of data | Total sample | At-risk drinkers | Not at-risk drinkers | Pearson χ2 |
|---|---|---|---|---|
| Self-reported drug use | (n = 110) | (n = 54) | (n = 56) | — |
| Cocaine | 7 (6.4%) | 6 (11.1%) | 1 (1.8%) | 4.0* |
| Marijuana | 31 (28.2%) | 22 (40.7%) | 9 (16.1%) | 8.3** |
| Amphetamines | 10 (9.1%) | 7 (13.0%) | 3 (5.4%) | 1.9 |
| Hallucinogens | 2 (1.8%) | 2 (3.7%) | 0 | 2.1 |
| Heroin | 3 (2.7%) | 2 (3.7%) | 1 (1.8%) | 0.4 |
| Other | 1 (0.9%) | 1 (1.9%) | 0 | 1.1 |
| Number of self-reported users | 36 (32.7%) | 23 (42.6%) | 13 (23.2%) | 4.7* |
| Toxicology results available | n = 82 | n = 43 | n = 39 | — |
| Cocaine | 4 (4.9%) | 4 (9.3%) | 0 | 3.7 |
| Marijuana | 20 (24.4%) | 15 (34.9%) | 5 (12.8%) | 5.4* |
| Amphetamine | 6 (7.3%) | 3 (7.0%) | 3 (7.7)% | 0.0 |
| Number with positive screen | 36 (43.9%) | 21 (48.8%) | 15 (38.5%) | 0.9 |
*P < 0.05; **P < 0.01.