Effect of a gender-synchronized family planning intervention on inequitable gender norms in a cluster randomized control trial among husbands of married adolescent girls in Dosso, Niger.

Gender inequity is pervasive globally and has severe consequences for health and well-being, particularly for women and girls in Niger. The Reaching Married Adolescents in Niger (RMA) intervention aimed to promote equitable gender norms in order to increase modern contraceptive use and reduce intimate partner violence among married adolescent girls and their husbands in Niger. Using data from a 4-arm factorial cluster randomized control trial of the RMA intervention (2016-2019), the current study assesses effects of the RMA intervention on gender norms among husbands. We used an adjusted hierarchical difference-in-differences linear regression model to assess these effects. The mean score for perceived gender inequitable norms at baseline was 4.1 (n=1,055; range: 0-5). Assignment to the RMA small groups intervention was associated with a 0.62 lower score (95% CI: -1.05, -0.18) relative to controls at follow-up, after adjusting for baseline differences. No significant effects were detected for other intervention arms. As a low-cost, simple, scalable, and transferrable intervention with rigorous evidence of being able to change such gender norms, this community health worker-based small group intervention could be valuable to the field of public health for reducing the negative impact of inequitable gender norms on health and wellbeing in similar settings.