Compared to nonparticipants, HVIP participants in Baltimore were six times less likely to be hospitalized for another violent injury two years post–program completion.

Cooper, Eslinger, and Stolley, “Hospital-Based Violence Intervention Programs Work,” Journal of Trauma: Injury, Infection, and Critical Care 61, no. 3 (September 2006): 534–37, https://doi.org/10.1097/01.ta.0000236576.81860.8c.