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Table 5 Brief motivational intervention (BMI) versus assessment only

From: Psychosocial interventions to reduce alcohol consumption in concurrent problem alcohol and illicit drug users: Cochrane Reviewa

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]
  1. aSignificance P = 0.02.