Kenyatta National Hospital, Box #19704-00202, Nairobi, Kenya.
AIDS. 2009 Nov;23 Suppl 1(Suppl 1):S89-95. doi: 10.1097/01.aids.0000363781.50580.03.
To evaluate a multipronged approach to promote dual contraceptive use by women within heterosexual HIV-1-serodiscordant partnerships.
For 213 HIV-1-serodiscordant couples in Thika, Kenya, participating in an HIV-1 prevention clinical trial, contraceptive promotion was initiated through a multipronged intervention that included staff training, couples family planning sessions, and free provision of hormonal contraception on-site. Contraceptive use and pregnancy incidence were compared between two time periods (before versus after June 2007, when the intervention was initiated) and between Thika and other Kenyan trial sites (Eldoret, Kisumu, and Nairobi). Generalized estimating equations and Andersen-Gill proportional hazards modeling were used.
Nonbarrier contraceptive use increased after implementation of the intervention: from 31.5 to 64.7% of visits among HIV-1-seropositive women [odds ratio 4.0, 95% confidence interval (CI) 3.0-5.3] and from 28.6 to 46.7% of visits among HIV-1-seronegative women (odds ratio 2.2, 95% CI 1.4-3.5). In comparison, at the other Kenyan sites, where the intervention was not implemented, contraceptive use changed minimally, from 15.6 to 22.3% of visits for HIV-1-seropositive women and from 13.6 to 12.7% among HIV-1-seronegative women. Self-reported condom use remained high during follow-up. Pregnancy incidence at the Thika was significantly lower after compared with before June 2007 (hazard ratio 0.2, 95% CI 0.1-0.6) and was approximately half that at other Kenyan sites during the intervention period (hazard ratio 0.5, 95% CI 0.3-0.8).
A multipronged family planning intervention can lead to high nonbarrier contraceptive uptake and reduced pregnancy incidence among women in HIV-1-serodiscordant partnerships.
评估一种多管齐下的方法,以促进异性恋 HIV-1 血清不一致伴侣中的女性同时使用两种避孕方法。
在肯尼亚蒂卡参与 HIV-1 预防临床试验的 213 对 HIV-1 血清不一致的夫妇中,通过多管齐下的干预措施启动了避孕措施,该措施包括员工培训、夫妇计划生育课程以及现场免费提供激素避孕。比较了两个时间段(干预开始前的 2007 年 6 月之前与之后)和蒂卡与肯尼亚其他试验点(埃尔多雷特、基苏木和内罗毕)之间的避孕措施使用情况和妊娠发生率。使用广义估计方程和 Andersen-Gill 比例风险模型进行分析。
干预措施实施后,非屏障避孕措施的使用率增加:HIV-1 血清阳性女性的就诊次数从 31.5%增加到 64.7%(优势比 4.0,95%置信区间 3.0-5.3),HIV-1 血清阴性女性的就诊次数从 28.6%增加到 46.7%(优势比 2.2,95%置信区间 1.4-3.5)。相比之下,在肯尼亚其他没有实施干预措施的试验点,避孕措施的使用变化不大,HIV-1 血清阳性女性的就诊次数从 15.6%增加到 22.3%,HIV-1 血清阴性女性的就诊次数从 13.6%增加到 12.7%。随访期间,自我报告的避孕套使用率一直很高。与 2007 年 6 月之前相比,蒂卡的妊娠发生率在 2007 年 6 月之后显著降低(风险比 0.2,95%置信区间 0.1-0.6),并且在干预期间,蒂卡的妊娠发生率约为肯尼亚其他试验点的一半(风险比 0.5,95%置信区间 0.3-0.8)。
多管齐下的计划生育干预措施可以提高 HIV-1 血清不一致伴侣中女性的非屏障避孕措施使用率,并降低妊娠发生率。