Deren S, Davis W R, Beardsley M, Tortu S, Clatts M
National Development and Research Institutes, Inc., New York, USA.
AIDS Educ Prev. 1995 Oct;7(5):379-90.
Many studies of interventions with high-risk populations have reported reductions in risk behaviors. To assess effectiveness of interventions, data are also needed on the characteristics of subjects lost to follow-up, and on follow-up risk behaviors for subjects who were not participants in the intervention. This paper reports on a study conducted in Harlem, New York, recruiting 1,770 injection drug users (IDUs) and sex partners of IDUs, randomly assigned to two interventions. Repeated-measures analyses for the two intervention groups and those who participated in no intervention indicated that all groups reported significant reductions in risk behaviors, with no group effect. Comparisons of those followed-up and not followed-up indicate that those followed-up were less likely to: be homeless, be Latinos, and to use "shooting galleries." The discussion focuses on the need to assess outcomes for all types of participants, and to distinguish the impact of interventions from other explanations for behavior changes.
许多针对高危人群的干预研究都报告了风险行为的减少。为评估干预措施的有效性，还需要有关失访受试者特征的数据，以及未参与干预的受试者的随访风险行为数据。本文报告了一项在纽约哈莱姆区进行的研究，招募了1770名注射吸毒者（IDU）及其性伴侣，随机分为两种干预措施。对两个干预组和未参与任何干预的组进行重复测量分析表明，所有组的风险行为均有显著减少，且无组间效应。对随访者和未随访者的比较表明，随访者不太可能：无家可归、是拉丁裔以及使用“射击场”。讨论的重点是评估所有类型参与者的结果的必要性，以及区分干预措施的影响与行为改变的其他解释。
