Williams Mark, Bowen Anne, Atkinson John S, Nilsson-Schönnesson Lena, Diamond Pamela M, Ross Michael W, Pallonen Unto E
College of Public Health and Social Work, Florida International University, Miami, FL, USA.
AIDS Care. 2012;24(2):220-31. doi: 10.1080/09540121.2011.597707. Epub 2011 Jul 25.
The purpose of this study was to assess the efficacy of brief group interventions, the positive choices intervention (PCI) and a standard intervention (SI), to increase condom use and intention to use condoms and to change condom use attitudes and beliefs. The design of the study was a randomized comparative trial. Participants were 347 heterosexual African American crack cocaine users living with HIV infection. Data were collected at intake and at three and nine months after intake. Behavioral and sociocognitive data were collected. Although both brief interventions achieved positive results, there were significant differences in outcomes between the interventions groups. The mean number of sex partners was significantly lower in the PCI group at three months. The proportion of those assigned to the PCI reporting sex with a paid partner significantly decreased, while the proportion disclosing their serostatus to their partners increased. There were no significant differences on these measures in the SI group. Significant time effects were found on measures of condom use, condom use attitudes, and self-efficacy beliefs. These measures significantly increased from intake to one month for both groups. One significant time-by-group effect was found. The measure of situational self-efficacy significantly increased in the PCI group, but not the SI group. Results also showed significant time-by-time effects. Mean condom use, intention to use condoms, attitudes, and condom use self-efficacy beliefs showed significant difference between three and nine months. However, there was no clear pattern of change. Findings suggest that brief group interventions designed to reduce HIV can help heterosexual drug users living with HIV infection increase condom use and intention to use condoms and change condom use attitudes and beliefs. A significant time-by-group effect was observed only for situational self-efficacy, suggesting limited additional efficacy of the PCI intervention. Given similar positive findings between groups, more research is needed to determine which components of brief interventions produce changes in motivations and risk behaviors.
本研究的目的是评估简短小组干预措施,即积极选择干预(PCI)和标准干预(SI),在增加避孕套使用和使用避孕套意愿以及改变避孕套使用态度和信念方面的效果。该研究采用随机对照试验设计。参与者为347名感染艾滋病毒的异性恋非裔美国可卡因吸食者。在入组时以及入组后三个月和九个月收集数据。收集行为和社会认知数据。尽管两种简短干预都取得了积极成果,但干预组之间的结果存在显著差异。三个月时,PCI组的性伴侣平均数量显著更低。被分配到PCI组的人中,与付费性伴侣发生性行为的报告比例显著下降,而向伴侣披露自身血清学状况的比例有所增加。SI组在这些指标上没有显著差异。在避孕套使用、避孕套使用态度和自我效能信念的测量方面发现了显著的时间效应。两组从入组到一个月时,这些指标均显著增加。发现了一个显著的时间×组效应。情境自我效能的测量在PCI组显著增加,但在SI组没有。结果还显示了显著的时间×时间效应。平均避孕套使用、使用避孕套意愿、态度和避孕套使用自我效能信念在三个月和九个月之间存在显著差异。然而,没有明确的变化模式。研究结果表明,旨在减少艾滋病毒感染的简短小组干预措施可以帮助感染艾滋病毒的异性恋吸毒者增加避孕套使用和使用避孕套意愿,并改变避孕套使用态度和信念。仅在情境自我效能方面观察到显著的时间×组效应,表明PCI干预的额外效果有限。鉴于两组之间有类似的积极发现,需要更多研究来确定简短干预的哪些组成部分会导致动机和风险行为的改变。