Article in the Annals of Behavioral Medicine, 2012
“Let Us Protect Our Future” is a sexual risk reduction intervention for sixth-grade adolescents in South Africa. Tested in a cluster-randomized controlled trial, the intervention significantly reduced self-reported intercourse and unprotected intercourse during a 12-month follow-up period. Purpose: The present analyses were conducted to identify moderators of the intervention’s efficacy as well as, which theory-based variables mediated the intervention’s effects. Methods: Intervention efficacy over the 3-, 6-, and 12-month follow-up was tested using generalized estimating equation models. Results: Living with their father in the home, parental strictness, and religiosity moderated the efficacy of the intervention in reducing unprotected intercourse. Self-efficacy to avoid risky situations and expected parental disapproval of their having intercourse, derived from Social Cognitive Theory, significantly mediated the intervention’s effect on abstinence.