Retention definition | Overall | Cocaine use | Hazardous alcohol use | ||||
---|---|---|---|---|---|---|---|
No | Yes | Difference | No | Yes | Difference | ||
Retention 1  ≥ 180 days of treatment without > 7-day gap | 6.4 (4.1, 8.9) | 4.1 (3.0, 5.2) | 2.3 (1.2, 3.8) | 1.8 (0.1, 3.5) | 3.7 (2.7, 4.8) | 2.8 (1.3, 4.5) | 0.9 (–1.0, 2.8) |
Retention 2  ≥ 180 days of treatment without > 30-day gap | 7.5 (5.1, 10.2) | 5.0 (3.8, 6.3) | 2.5 (1.3, 3.9) | 2.5 (0.6, 4.2) | 4.5 (3.4, 5.7) | 3.1 (1.6, 4.9) | 1.4 (–0.6, 3.4) |
Retention 3  ≥ 90 days of treatment without > 7-day gap | 9.0 (6.2, 12.1) | 5.7 (4.4, 7.1) | 3.3 (1.8, 5.0) | 2.4 (0.4, 4.4) | 5.2 (4.0, 6.5) | 4.0 (2.1, 6.0) | 1.2 (–1.1, 3.5) |
Retention 4  ≥ 90 days of treatment without > 30-day gap | 10.4 (7.5, 13.7) | 6.8 (5.4, 8.4) | 3.6 (2.1, 5.3) | 3.2(1.1, 5.3) | 6.1 (4.9, 7.5) | 4.4 (2.5, 6.6) | 1.7 (–0.7, 4.1) |