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目的探讨影响男男性行为人群(MSM)队列维持率的影响因素,为MSM队列HIV新发感染和干预研究提供参考。方法 2009年7—9月采用滚雪球方法在江苏省常州进行MSM人群HIV感染率基线调查,在此基础上,于2009年12月及2010年6月对MSM人群进行2次随访调查,统计分析调查对象人口学资料及行为学特征对队列随访观察保持率的影响。结果本调查共进入MSM队列408人,期间至少参加1次随访的对象共177人,队列保持率43.4%。单因素分析结果显示,文化程度、寻找性伴常去场所、性行为对象对队列维持率的影响有统计学意义(P<0.05)。logistic多因素分析结果显示,影响MSM队列维持率的因素主要有文化程度为高中及以上(OR=1.93,95%CI=1.24～2.99)、本地户籍(OR=2.15,95%CI=1.26～3.65)、性行为对象女性为主(OR=2.07,95%CI=1.17～3.68)、发生商业性行为(OR=0.36,95%CI=0.17～0.76)以及寻找性伴常去场所(浴室)(OR=0.47,95%CI=0.25～0.89)。结论文化程度高、本地户籍、性行为对象以女性为主、未发生商业性行为等MSM个体更易保留在随访队列中。
Objective To investigate the influencing factors of the maintenance rate of cohort of men who have sex with men (MSM) and to provide a reference for the study of new HIV infection and intervention in MSM cohorts. Methods From September to September in 2009, a baseline survey of HIV prevalence in MSM population was performed by snowball method in Changzhou, Jiangsu Province. Based on this, two follow-up surveys were conducted on MSM in December 2009 and June 2010, and statistical analysis was conducted The impact of demographic data and behavioral characteristics on the follow-up of cohort follow-up. Results A total of 408 MSM cohorts were enrolled in this survey. A total of 177 subjects participated in one follow-up during the survey, and the cohort maintained a rate of 43.4%. The results of univariate analysis showed that there was a significant difference in the maintenance rate of the cohort among the educational level, the place frequented by partners, and the sexual behavior (P <0.05). The results of logistic multivariate analysis showed that the main factors influencing the maintenance rate of MSM cohort were high school education (OR = 1.93, 95% CI = 1.24-2.99), local household registration (OR = 2.15, 95% CI = 1.26-3.65 (OR = 2.07, 95% CI = 1.17-3.68), commercial sexual activity (OR = 0.36, 95% CI = 0.17-0.76), and sexual partners OR = 0.47, 95% CI = 0.25-0.89). Conclusion The MSM with high educational level, local census and sexual behavior are female, while MSM without commercial behavior is more likely to be kept in the follow-up cohort.