Table 2.
Substance use at baseline
| Control (n=163) | Therapy (n=164) | |||
|---|---|---|---|---|
| Main substance (n (%)) | Any use (n (%)) | Main substance (n (%)) | Any use (n (%)) | |
| Alcohol* | 93 (57.1) | 107 (65.6) | 94 (57.3) | 104 (63.4) |
| Cannabis | 42 (25.8) | 82 (50.3) | 40 (24.4) | 78 (47.6) |
| Cocaine | 5 (3.1) | 15 (9.2) | 1 (0.6) | 12 (7.3) |
| Ecstasy | 0 (0.0) | 12 (7.4) | 1 (0.6) | 5 (3.0) |
| Heroin | 6 (3.7) | 15 (9.2) | 6 (3.7) | 17 (10.4) |
| Amphetamines | 8 (4.9) | 17 (10.4) | 11 (6.7) | 27 (16.5) |
| Crack | 8 (4.9) | 13 (8.0) | 9 (5.5) | 22 (13.4) |
| Other | 1 (0.6) | 14 (8.6) | 2 (1.2) | 16 (9.8) |
| Polysubstance use† | — | 72 (44.2) | — | 70 (42.7) |
*Alcohol use meeting Diagnostic and Statistical Manual of Mental Disorders, fourth edition, dependence or abuse criteria.
†Two or more substances, including use of any illicit drug, alcohol above safe limits, or both.