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School-based multiple risk behaviour interventions to prevent cannabis use
Summary of the evidence
A recent systematic review (MacArthur et al 2018) of 70 RCTs addressing two or more risk behaviours (with a follow-up period of at least six months) and targetting children up to 18 years of age found:
- no certain effects of universal school-based multiple risk behaviour interventions in preventing cannabis use (OR 0.79, 95% CI 0.62 to 1.01; P= 0.06; n=6 studies; 4140 participants; I² = 0%; moderate-quality evidence)
Details
Note: this evidence summary is only valid for the outcomes, target groups, settings and substances/patterns of use described below.
