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. 2018 Dec 5;2018(12):CD009269. doi: 10.1002/14651858.CD009269.pub4

Comparison 3. Motivational interviewing (MI) versus treatment as usual (TAU) or educational intervention only.

Outcome or subgroup title No. of studies No. of participants Statistical method Effect size
1 Alcohol use as AUDIT or ASSIST scores at 3 months 2 141 Std. Mean Difference (IV, Random, 95% CI) 0.04 [‐0.29, 0.37]
2 Alcohol use as AUDIT scores at 9 months 1   Mean Difference (IV, Fixed, 95% CI) Subtotals only
3 Alcohol use as number of standard drinks consumed per day over the last 30 days 1   Mean Difference (IV, Fixed, 95% CI) Subtotals only
4 Alcohol use as number of drinks per week at 3 months 1   Mean Difference (IV, Fixed, 95% CI) Subtotals only
5 Alcohol use as number of drinks per week at 9 months 1   Mean Difference (IV, Fixed, 95% CI) Subtotals only
6 Alcohol use as greater than 50% reduction in number of standard drinks consumed per day over the last 30 days 1   Risk Ratio (M‐H, Fixed, 95% CI) Subtotals only
7 Alcohol abstinence as abstinence from alcohol over the last 30 days 1   Risk Ratio (M‐H, Fixed, 95% CI) Subtotals only
8 Alcohol use as decreased alcohol use at 3 months 1   Risk Ratio (M‐H, Fixed, 95% CI) Subtotals only
9 Alcohol use as decreased alcohol use at 9 months 1   Risk Ratio (M‐H, Fixed, 95% CI) Subtotals only
10 Retention ‐ end of treatment 1   Risk Ratio (M‐H, Fixed, 95% CI) Subtotals only
11 Retention at 3 months (unpublished and published data) 2 160 Risk Ratio (M‐H, Random, 95% CI) 0.93 [0.60, 1.43]
12 Illicit drug use as frequency of drug use (as measured by Addiction Severity Index ‐ ASI drug) 1   Mean Difference (IV, Fixed, 95% CI) Subtotals only
13 Illicit drug use as a composite drug score (frequency*severity for all drugs taken) 1   Mean Difference (IV, Fixed, 95% CI) Subtotals only