Combined programmes vs usual curricula: Marijuana use ≥ 12 months Subjective
Combined programmes probably leads to lower marijuana use ≥12 months Subjective compared with usual curricula (moderate certainty).
What each review found
Include earlier review versions| Finding | Effect | Studies | GRADE certainty |
|---|---|---|---|
Combined programmes vs usual curricula Marijuana use ≥12 months Subjective · primary or secondary school pupils Combined programmes probably leads to lower marijuana use ≥12 months Subjective compared with usual curricula (moderate certainty). Universal school‐based prevention for illicit drug use (2014) · Cochrane Headline outcomes only | RR 0.83 [0.69, 0.99] | 6 studies · 26910 participants | Moderate |
Findings are shown side by side, never pooled across reviews.
The reviews
| Review | Searched up to | Included studies | AMSTAR 2 |
|---|---|---|---|
| Universal school‐based prevention for illicit drug use 2014 · Cochrane Headline outcomes only | Not reported | list not extracted yet | Not assessed |
Studies behind the findings
None of these reviews ties its included studies to this outcome in the data here. Cochrane reviews and reviews with headline outcomes only do not list their studies yet.
How reviews are matched to this question
Reviews word the same question differently. Four decision models (TypeSafe's Jev, Liquid AI's d1-ultra, SubQ Snap and Baseten's Elephant) judged each wording of the population, intervention, comparator and outcome against the others; two wordings count as the same when at least three of them agree and none clearly disagrees, and findings count as this question only when all four elements match. Timing, setting and subgroup never split a question: they are shown on each finding.