Annals of Behavioral Medicine

, Volume 44, Issue 2, pp 181–191 | Cite as

Moderation and Mediation of an Effective HIV Risk-Reduction Intervention for South African Adolescents

  • Ann O’Leary
  • John B. JemmottIII
  • Loretta Sweet Jemmott
  • Scarlett Bellamy
  • Zolani Ngwane
  • Larry Icard
  • Lynnette Gueits
Original Article

Abstract

Background

“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.

Conclusions

This is the first study to demonstrate that Social Cognitive variables mediate the efficacy of a sexual risk-reduction intervention among South African adolescents.

Keywords

HIV prevention Behavioral intervention Adolescents South Africa Moderation Mediation 

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Copyright information

© The Society of Behavioral Medicine (outside the USA) 2012

Authors and Affiliations

  • Ann O’Leary
    • 1
  • John B. JemmottIII
    • 2
  • Loretta Sweet Jemmott
    • 2
  • Scarlett Bellamy
    • 2
  • Zolani Ngwane
    • 3
  • Larry Icard
    • 4
  • Lynnette Gueits
    • 2
  1. 1.Prevention Research Branch, Division of HIV/AIDS Prevention, National Center for HIV, Hepatitis, STD, and TB PreventionCenters for Disease Control and PreventionAtlantaUSA
  2. 2.University of PennsylvaniaPhiladelphiaUSA
  3. 3.Haverford CollegeHaverfordUSA
  4. 4.Temple UniversityPhiladelphiaUSA

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