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What strategies can be effective in reducing crime and disorder in policing? The Evidence-Based Policing Matrix is a research-to-practice translation tool that organizes moderate to very rigorous evaluations of police interventions visually, allowing agencies and researchers to view the field of research in this area. The Matrix is updated with all qualifying studies each year.

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Groups – Fritsch et al. (1999) Aggressive curfew

Truancy and curfew enforcement associated with reduction in gang violence

Groups – Papachristos and Kirk (2015)

Group Violence Reduction Strategy led to a reduction in shootings and lowered the likelihood of fatal or nonfatal victimization

Groups – Ratcliffe et al. (2017)

Gang interdiction operation led to a 22% violence reduction in the area where the gang operated

Groups – Ridgeway, Grogger, et al. (2019)

Gang injunctions were estimated to reduce total reported crime by 5% in the short term (5 years), and 18% over the long term (27 years).

Groups – Sierra-Arevalo et al. (2017)

Statewide-focused deterrence intervention was associated with a reduction in total shootings and group member-involved incidents

Groups — Cahill et al. (2008)

Gang reduction program led to decrease of gang-related incidents in the target area, but similar decrease observed in the comparison area

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