What works to prevent youth violence: evidence summary
This report draws together high-quality international evidence about what works to prevent youth violence, to inform policymakers and practitioners about the evidence base and effectiveness associated with different approaches and interventions.
Annex D: Evidence of Effectiveness Decision Tree
![Evidence of Effectiveness Decision Tree. Decision Tree illustrating the process taken by analysts to categorise the effectiveness of interventions based on available evidence. The decision tree begins with a single statement to determine whether the analyst had found at least one study of intervention(s) aimed at preventing/reducing the effects of violence published in a journal or government or third sector report with sufficient detail to assess evidence. The options “yes” or “no” are presented. Further questions branch off from these responses. These include whether the study included outcomes relating to violence prevention or reduction, what the strength of the evidence is, and whether the effect was consistent all studies. These branching questions lead to the classification categories of effective (green), promising (orange), mixed (orange), no-effect (red), negative effect/potentially harmful (red) and inconclusive (grey).](/binaries/content/gallery/publications/research-analysis/2021/02/works-prevent-youth-violence-summary-evidence/SCT01218347101_g02.gif)
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Email: Frances.warren@gov.scot
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