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Table 2 Brief intervention (BI) versus treatment as usual

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
2.1 Continuous outcomes    Mean Difference (IV, Fixed, 95% CI) Subtotals only
2.1.1 Alcohol use as AUDIT scores at three months 1 110 Mean Difference (IV, Fixed, 95% CI) 0.10 [-2.96, 3.16]
2.1.2 Alcohol use as AUDIT Scores at nine months 1 110 Mean Difference (IV, Fixed, 95% CI) 1.50 [-1.74, 4.74]
2.1.3 Alcohol use as number of drinks per week at three months 1 110 Mean Difference (IV, Fixed, 95% CI) 2.40 [-4.59, 9.39]
2.1.4 Alcohol use as number of drinks per week at nine months 1 110 Mean Difference (IV, Fixed, 95% CI) −1.70 [-8.93, 5.53]
2.2 Dichotomous outcomes    Risk Ratio (M-H, Fixed, 95% CI) Subtotals only
2.2.1 Alcohol use as decreased alcohol use at three months 1 110 Risk Ratio (M-H, Fixed, 95% CI) 0.32a [0.19, 0.54]
2.2.2 Alcohol use as decreased alcohol use at nine months 1 110 Risk Ratio (M-H, Fixed, 95% CI) 0.16a [0.08, 0.33]
  1. asignificance P <0.0001.