Table 1.
Self‐reported number of days of alcohol and tobacco use at assessment and follow‐up (past 90 days) for assignment based on the RIASI‐T and RIASI‐R
| Substance | Program groups | Assessment Mean (SD) | Follow‐up Mean (SD) | P Value |
|---|---|---|---|---|
| Assignment based on RIASI‐T | ||||
| Alcohol | 8‐hour | 12.12 (16.10) | 9.61 (13.57) | <0.001 |
| 16‐hour | 16.07 (19.08) | 10.26 (14.38) | <0.001 | |
| Tobacco | 8‐hour | 46.95 (43.83) | 43.27 (44.00) | <0.001 |
| 16‐hour | 62.30 (40.24) | 57.62 (42.09) | <0.001 | |
| Assignment based on RIASI‐R | ||||
| Alcohol | 8‐hour | 12.09 (16.11) | 9.60 (13.57) | <0.001 |
| 16‐hour | 17.16 (19.22) | 10.44 (14.29) | <0.001 | |
| Tobacco | 8‐hour | 46.67 (43.85) | 42.99 (44.00) | <0.001 |
| 16‐hour | 68.70 (36.77) | 63.11 (40.03) | <0.001 | |