{"__content__"=>"\n Objective\n \n \n Methods\n \n \n Results\n \n \n Conclusions\n \n ", "p"=>[{"__content__"=>"To evaluate whether focused foot patrols in harm-weighted micro-places reduce crime frequency and crime harm in Santiago, Chile, relative to business-as-usual patrol allocation."}, {"__content__"=>"Priority Areas were identified by combining hotspot and harmspot criteria using the Chilean Crime Harm Index. Forty-nine street segments were assigned to receive three daily foot patrol visits and 110 served as controls. Effects were estimated using covariate-adjusted intention-to-treat (ITT) Difference-in-Differences models that retained all randomized Priority Areas while adjusting for baseline imbalance, stratification cluster, proximity to Metro stations, and implementation violations where relevant."}, {"__content__"=>"The primary ITT analysis did not identify statistically significant reductions in overall crime frequency or overall crime harm. Secondary implementation-sensitive analyses showed larger, though still non-significant, aggregate reductions in treated areas. Theoretically informed offence-category analyses, however, identified significant reductions in the combined category of Assaults, Public Consumption of Alcohol or Drugs, and Street Vending without Licence. Cost-effectiveness analyses indicated that the intervention performed more efficiently than the standard quadrant-based patrol model under the restricted implementation-sensitive specification."}, {"__content__"=>"The findings suggest that focused foot patrols in harm-weighted micro-places can reduce visible and guardianship-sensitive offences, even under conditions of low dosage and implementation constraints. More broadly, the study shows that randomized policing trials may generate different conclusions depending on whether analyses estimate assignment effects, implementation-sensitive contrasts, or theoretically targeted offence outcomes."}]}