北京市男男性行为人群队列保持情况及影响因素

Cohort retention and influence factors among men have sex with men in Beijing

目的探讨男男性行为人群(MSM)队列保持影响因素。方法于2014年2至12月在北京招募符合条件的MSM,并在6个月后进行随访,分析研究对象的社会人口学和行为特征,以及对队列保持的影响。结果基线进入队列的528名MSM,6个月后随访到388名,随访率为73.48%。单因素和多因素分析显示,年龄>25岁、随访期同男性肛交行为和较高的保持率密接相关(P<0.01)。结论低年龄段、随访期同男性未发生肛交行为的MSM,不容易在队列中保持,需要在MSM队列研究中引起注意。

Objective To explore the influence factors of cohort retention among men have sex with men(MSM).Methods The participants were recruited from February to December,2014 in Beijing.Followup was conducted in 6 months.The socio-demographic and behavioral characteristics which might affect the retention were analyzed.Results A total of 528 MSM were successfully recruited at baseline,the followup rate was 73.48%after 6 months.In both single factor and multiple COX regression analysis,the factors including age over 25 years,having anal intercourse with men during the follow-up survey,were found to be associated with a higher retention rate(P<0.01).Conclusion It is not easy to retain MSM in the cohort study who were younger and didn’t have anal intercourse.All these factors should be given serious attention during the MSM cohort study.