Table 2.
Means (Standard Deviations) for Each Drinking Outcome by At Least One- and Two-Level Reductions at Each Assessment Timepoint
| Outcome | No change or increaseMean (SD) | At least 1-level reductionMean (SD) | 1-level reduction, no change, or increaseMean (SD) | At least 2-level reductionMean (SD) |
|---|---|---|---|---|
| DrInC | ||||
| Week 16 | 35.3 (14.3) | 11.0 (16.5) | 24.8 (22.9) | 10.1 (16.1) |
| Week 26 | 37.7 (25.2) | 13.6 (18.1) | 31.6 (24.2) | 11.3 (16.5) |
| Week 52 | 39.9 (23.2) | 16.8 (19.5) | 33.5 (22.8) | 14.8 (18.9) |
| Week 68 | 38.6 (22.9) | 15.7 (20.1) | 33.7 (22.0) | 13.2 (18.3) |
| PHDD | ||||
| Week 16 | 71.3% (32.9%) | 9.1% (17.5%) | 50.7% (38.2%) | 5.9% (11.3%) |
| Week 26 | 62.2% (35.4%) | 12.8% (21.9%) | 49.6% (36.6%) | 8.9% (15.6%) |
| Week 52 | 67.1% (33.1%) | 15.9% (24.5%) | 55.6% (35.8%) | 10.6% (18.3%) |
| Week 68 | 71.4% (32.4%) | 14.9% (23.6%) | 58.9% (35.7%) | 9.5% (16.8%) |
| PDD | ||||
| Week 16 | 77.6% (28.8%) | 18.9% (26.7%) | 59.9% (36.6%) | 15.4% (23.4%) |
| Week 26 | 70.5% (32.4%) | 23.9% (29.6%) | 61.2% (34.7%) | 18.2% (25.3%) |
| Week 52 | 73.7% (29.8%) | 27.7% (31.9%) | 65.8% (33.4%) | 21.6% (27.8%) |
| Week 68 | 78.4% (27.2%) | 27.1% (31.8%) | 69.9% (31.7%) | 20.7% (27.4%) |
| DPDD | ||||
| Week 16 | 12.2 (7.5) | 5.9 (4.1) | 9.9 (6.7) | 5.6 (4.0) |
| Week 26 | 11.8 (7.2) | 4.6 (5.4) | 9.6 (6.6) | 4.1 (5.6) |
| Week 52 | 11.7 (7.1) | 5.7 (6.2) | 9.7 (6.8) | 5.4 (6.4) |
| Week 68 | 11.6 (6.5) | 7.1 (5.7) | 10.1 (6.1) | 6.8 (5.9) |
Note. All numbers are observed (percentages are based on valid number of cases) with no imputation for missing data. Alcohol consumption and consequences were measured at weeks 16, 26, 52, and 68. DrInC = Drinker Inventory of Consequences Total Score; PHDD = Percent heavy drinking days; PDD = Percent drinking days; DPDD = Drinks per drinking day.