Table 5 Brief motivational intervention (BMI) versus assessment only

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)

1.67^a [1.08, 2.60]