Method
This analysis used data from the SS/CF intervention trial, a two-arm cluster randomised community-based controlled trial [Trial eligibility was: male, aged 18–30 years, not in formal employment or education, living in selected informal settlement clusters, and being able to communicate in English, isiZulu, or isiXhosa. Those who lacked the ability to understand the information forms and were unable to provide written consent were therefore excluded.Between September 2015 and September 2016, 674 consenting young men were recruited from 34 clusters. Before the intervention was implemented, study participants self-completed a questionnaire assessing their socio-demographic, mental health, economic status and IPV perpetration. All questionnaires were forward and back-translated between English and IsiZulu/IsiXhosa. Trained research staff who were fluent in English, isiZulu and isiXhosa were available to support questionnaire completion if needed. Of the 674 participants, 338 (50.2%) were randomly assigned to receive the intervention (SS/CF) and 336 (49.9%) to a wait-list control group. Data were collected at baseline, 12-month and 24 month post intervention. More information about the methodology, randomisation and study attrition can be found in the main trial protocol [