Sexual violence is defined as any act targeting an individual's sexuality or sexual organs without consent, often involving coercion or threats. It constitutes a global public health concern with significant mental health consequences, particularly among adolescents as a vulnerable population, including those in Makassar, Indonesia. This study aimed to examine the effect of a peer group education approach on adolescents’ knowledge and attitudes regarding sexual violence. A quasi-experimental design with a non-equivalent control group and a pretest–posttest method was employed, involving 50 participants in the intervention group and 50 in the control group. Data were analyzed using the Mann–Whitney U test. The results showed a statistically significant difference between the intervention and control groups following the intervention, with p-values of 0,007 for knowledge (p-value <0,05) and 0,004 for attitude (p-value<0,05). These findings suggest that peer group education is an effective strategy for improving knowledge and fostering positive attitudes toward sexual violence among adolescents.
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