|Weighted event rates|
|Trials||Number of trials||Programme||Control||RRI (95% CI)||NNH (CI)|
|*Abbreviations defined in glossary; weighted event rates, RRI, NNH, and CI calculated from data in article using a random effects model.|
|All||7||38%||27%||33% (3 to 71)||10 (6 to 40)|
|Excluding trial with randomisation problems||6||36%||29%||22% (2 to 46)||16 (8 to 250)|
|Excluding trial with potential for large attrition||6||44%||30%||43% (4 to 96)||8 (5 to 24)|
Review: “Scared Straight” and other juvenile awareness programmes increase criminal behaviour
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