. 2016 Oct 20;62(1):15–29. doi: 10.1007/s00038-016-0909-6

Table 4.

Synthesis of the results

Outcome	Number of studies that:
Outcome	Measured it	Documented a reduction^a	Documented an increase^a
Homicides (official records or perception of occurrence)^b	2	2	0
Youth engament in violent behaviour (fights, bullying, antisocial behaviours), self-reported	3	2	1
Youth engagement in crime, deviant behaviours, vandalism, etc., self-reported	2	0	1^c
Presence of youth violence within the school/community, as reported by others	6	6	1

Interventions to prevent youth violence. Latin America, 2015

^aStudies that documented a significant result with p ≤ 0.05 in at least one measurement

^bIn addition, one study measured juvenile violent crimes including but not limited to homicides and documented a statistical significant reduction post-intervention

^cThe second study also documented an increase but not information on p values were provided