Outcome or subgroup | Studies | Participants | Statistical method | Effect estimate |
---|---|---|---|---|
5.1 Continuous outcomes | Mean Difference (IV, Fixed, 95% CI) | Subtotals only | ||
5.1.1 Alcohol use as number of days in the past 30 days with alcohol use at one month | 1 | 187 | Mean Difference (IV, Fixed, 95% CI) | −0.30 [-3.38, 2.78] |
5.1.2 Alcohol use as number of days in the past 30 days with alcohol use at six months | 1 | 187 | Mean Difference (IV, Fixed, 95% CI) | −1.50 [-4.56, 1.56] |
5.2 Dichotomous outcomes | Risk Ratio (M-H, Fixed, 95% CI) | Subtotals only | ||
5.2.1 Alcohol use as 25% reduction of drinking days in the past 30 days | 1 | 187 | Risk Ratio (M-H, Fixed, 95% CI) | 1.23 [0.96, 1.57] |
5.2.2 Alcohol use as 50% reduction of drinking days in the past 30 days | 1 | 187 | Risk Ratio (M-H, Fixed, 95% CI) | 1.27 [0.96, 1.68] |
5.2.3 Alcohol use as 75% reduction of drinking days in the past 30 days | 1 | 187 | Risk Ratio (M-H, Fixed, 95% CI) | 1.21 [0.84, 1.75] |
5.2.4 Alcohol use as one or more drinking days’ reduction in the past 30 days | 1 | 187 | Risk Ratio (M-H, Fixed, 95% CI) | 1.12 [0.91, 1.38] |
5.2.5 Alcohol use as seven or more drinking days’ reduction in the past 30 days | 1 | 187 | Risk Ratio (M-H, Fixed, 95% CI) | 1.67a [1.08, 2.60] |