Table 3.
Predicting the percentage of heavy drinking days per week (N = 211)
| Coefficient [95% CI] | P value | ||
|---|---|---|---|
| Covariates | |||
| Age (year) | −0.09 | [−0.29, 0.12] | 0.39 |
| Gender (female vs. male) | 3.25 | [−2.04, 8.54] | 0.24 |
| Drinking frequency - Past 28 daysa | |||
| Occasional vs. None | 3.5 | [−2.01, 9.01] | 0.21 |
| Frequent vs. None | 7.42 | [1.78, 13.67] | 0.02 |
| Main effects | |||
| Treatment condition (CM vs. Control) | −5.94 | [−12.19, 0.32] | 0.06 |
| Mandate (Mandated vs. Non-Mandated) | −11.49 | [−19.56, −3.44] | 0.01 |
| Visit (week) | 1.03 | [0.51, 1.55] | 0.00 |
| Interactions | |||
| Treatment × Mandate | 4.04 | [−6.90, 14.98] | 0.47 |
| Treatment × Visit | −0.99 | [−1.73, −0.26] | 0.01 |
| Mandate × Visit | −0.9 | [−1.79, −0.02] | 0.04 |
| Treatment × Mandate × Visit | 1.24 | [−0.03, 2.51] | 0.06 |
Note.
a
Self-reported drinking frequency: None: 0% of drinking days for the past 28 days; Occasional drinking: > 0% to <= 30%; Frequent drinking: >30%.