A cluster randomized controlled trial of an adolescent HIV prevention program among Bahamian youth: effect at 12 months post-intervention.

摘要

Behavioral interventions based on the Protection Motivation Theory (PMT) have been demonstrated to reduce HIV risk behavior among mid- and older adolescents in different settings across the globe but have not been evaluated among Caribbean nations and have received limited evaluation among pre-adolescents. To determine (1) the effectiveness among pre-adolescents in The Bahamas of a PMT-based HIV prevention program "Focus on Youth in the Caribbean" (FOYC) and (2) the role of the targeted PMT constructs in intervention effect. 1,360 sixth grade youth (10-11 years of age) from 15 urban schools in New Providence, The Bahamas were randomized by school to receive either FOYC or a control condition. Data collected at baseline, 6 and 12 months post intervention were analyzed. A five-step scheme was used to assess sexual behavior progression, ranging from "1" = "a virgin without intention to have sex" to "5" = "having sex without a condom". Group-based trajectory analysis was utilized in assessing the program effect. Two sexual behavior progression patterns were detected: slow progressors and quick progressors. Receiving FOYC reduced the likelihood for adolescents to become quick progressors (adjusted OR = 0.77, 95% CI: 0.64-1.00). The observed effectiveness was especially impacted by a subset of the targeted PMT constructs. FOYC effectively delays sexual risk among Bahamian pre-adolescents. The group-based trajectory analysis provides an analytical approach for assessing interventions among adolescents with low rates and diverse progression patterns of sexual activity.