Research Department, ETR Associates, Scotts Valley, CA 95066, USA.
J Adolesc Health. 2013 Jul;53(1):68-78. doi: 10.1016/j.jadohealth.2012.12.012. Epub 2013 Apr 3.
This paper presents results from a randomized controlled trial that assessed the short- and longer-term impact of a skills-based HIV/STI/pregnancy prevention curriculum, service learning, and the combination.
The study featured a four-arm experimental design involving 47 classrooms (765 youth) from continuation high schools. Classrooms were randomly assigned to one of four conditions: (1) HIV/STI/pregnancy prevention curriculum only; (2) service learning only; (3) HIV/STI/pregnancy prevention curriculum plus service learning; or (4) an attention control curriculum. Students completed 3 surveys over 18 months. Multi-level analysis was used to adjust for the correlation among students within the same classroom and school, and the correlation of repeated measurements.
Participants were 53% male (mean age: 16.2 years). The majority of youth reported being Hispanic/Latino or African-American (37.9% and 22.3%, respectively). Students in the HIV/STI/pregnancy prevention curriculum condition were less likely to have vaginal intercourse without a condom in the 3 months prior to the survey [odds ratio (OR) = .58, p = .04]; these effects diminished by final follow-up. The program also significantly reduced students' exposure to risky situations. These changes were not significant in the service learning only or combined intervention conditions relative to control.
This study is one of a few controlled studies of HIV/STI and pregnancy prevention programs in continuation settings, and suggests the curriculum was effective in changing selected risk behaviors in the short term.
本文介绍了一项随机对照试验的结果,该试验评估了基于技能的艾滋病毒/性传播感染/妊娠预防课程、服务学习以及两者结合对短期和长期的影响。
该研究采用了四臂实验设计,涉及来自延续高中的 47 个班级(765 名青年)。将班级随机分配到以下四种条件之一:(1)仅艾滋病毒/性传播感染/妊娠预防课程;(2)仅服务学习;(3)艾滋病毒/性传播感染/妊娠预防课程加服务学习;或(4)注意力控制课程。学生在 18 个月内完成了 3 次调查。采用多层次分析方法,以调整同一班级和学校内学生之间的相关性,以及重复测量的相关性。
参与者中 53%为男性(平均年龄:16.2 岁)。大多数青年报告自己是西班牙裔/拉丁裔或非裔美国人(分别为 37.9%和 22.3%)。接受艾滋病毒/性传播感染/妊娠预防课程的学生在调查前 3 个月内发生无保护性行为的可能性较低[优势比(OR)=0.58,p=0.04];这些效果在最终随访时减弱。该项目还显著减少了学生接触危险情况的次数。与对照组相比,在仅服务学习或联合干预条件下,这些变化并不显著。
这项研究是在延续环境中针对艾滋病毒/性传播感染和妊娠预防项目的少数几项对照研究之一,表明该课程在短期内有效改变了某些风险行为。