Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

483 questions · 519 findings · 42 reviews · Headline outcomes only

No studies found 136 · 26.2%GRADE not reported 9 · 1.7%Very low 136 · 26.2%Low 150 · 28.9%Moderate 68 · 13.1%High 20 · 3.9%

Brief intervention vs treatment

Decreased alcohol use · concurrent problem alcohol and illicit drug users

Brief intervention (BI) showed no clear difference in decreased alcohol use compared with treatment (low certainty).

2 findings from 1 review

Motivational interviewing vs treatment

Over 50% less standard drinks per day Timeline follow back · concurrent problem alcohol and illicit drug users

Motivational interviewing (MI) showed no clear difference in greater than 50% reduction in number of standard drinks consumed per… compared with treatment (low certainty).

1 finding from 1 review

Motivational interviewing vs treatment

Abstinence from alcohol over the last 30 days · concurrent problem alcohol and illicit drug users

Motivational interviewing (MI) showed no clear difference in abstinence from alcohol over the last 30 days compared with treatment (low certainty).

1 finding from 1 review

Motivational interviewing vs treatment

Retention [ · concurrent problem alcohol and illicit drug users

Motivational interviewing (MI) showed no clear difference in retention ‐ end of treatment compared with treatment (low certainty).

2 findings from 1 review