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A Randomized Controlled Trial Testing an HIV Prevention Intervention for Latino Youth
Antonia M. Villarruel, PhD, RN;
John B. Jemmott III, PhD;
Loretta S. Jemmott, PhD, RN
Arch Pediatr Adolesc Med. 2006;160:772-777.
Objective To test the efficacy of a prevention intervention to reduce sexual risk behavior among Latino adolescents.
Design Randomized controlled trial from April 2000 through March 2003, with data collection before and after intervention and at 3, 6, and 12 months.
Setting Northeast Philadelphia schools.
Participants Latinos aged 13 through 18 years (249 males and 304 females); 81.6% retained at 12-month follow-up.
Interventions The HIV and health-promotion control interventions consisted of six 50-minute modules delivered by adult facilitators to small, mixed-gender groups in English or Spanish.
Main Outcome Measure Self-reported sexual behavior.
Results Analyses using generalized estimation equations over the follow-up period revealed that adolescents in the HIV intervention were less likely to report sexual intercourse (odds ratio, 0.66; 95% confidence interval [CI], 0.46-0.96), multiple partners (odds ratio, 0.53; 95% CI, 0.31-0.90), and days of unprotected intercourse (relative risk, 0.47; 95% CI, 0.26-0.84) and more likely to report using condoms consistently (odds ratio, 1.91; 95% CI, 1.24-2.93). Baseline sexual experience and language use moderated intervention efficacy. Adolescents assigned to the HIV intervention who were sexually inexperienced at baseline reported fewer days of unprotected sex (relative risk, 0.22; 95% CI, 0.08-0.63); Spanish speakers were more likely to have used a condom at last intercourse (odds ratio, 4.73; 95% CI, 1.72-12.97) and had a greater proportion of protected sex (mean difference, 0.35; P<.01) compared with similar adolescents in the health-promotion intervention.
Conclusion Results provide evidence for the efficacy of HIV intervention in decreasing sexual activity and increasing condom use among Latino adolescents.
Author Affiliations: School of Nursing, University of Michigan, Ann Arbor (Dr Villarruel); and Annenberg School for Communication (Dr J. B. Jemmott) and School of Nursing (Drs Villarruel and L. S. Jemmott), University of Pennsylvania, Philadelphia.
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