杭州市使用社交网络大学生MSM人群规模评估研究

了解杭州市三大高教园大学生使用同性社交软件情况并估计使用社交网络学生男男性行为人群(men who have sex with men,MSM)规模,为开展针对MSM大学生的艾滋病防控工作提供依据.方法 2017年4月15日,选取杭州市滨江、下沙、小和山三大高教园区合适的地点,分3组开展调研,并对登陆同性社交软件的男同性恋大学生开展计数,7d以后重复此过程,通过对比个人信息,确定2次计数均被计入的调查对象,采用捕获—再捕获法计算使用社交网络学生MSM人群规模.结果 杭州市使用社交网络学生MSM人群规模约为2 636人(95%CI=2 522~2 750),平均年龄为(20.75±2.00)岁,平均体重为(63.58±11.82) kg,平均身高为(175.86±8.89) cm.在性角色分类中,插入和被插入均可的有400人(21.11%),被插入方405人(21.39%),插入方280人(14.78%),保密或未填809人(42.72%).结论 同性社交软件为应用捕获—再捕获方法估计男同性恋学生人群基数提供了新手段,也为高校开展对男同性恋青年学生的宣教工作提供了载体.新媒体技术在高校艾滋病防控工作中的作用值得深入研究.

Application of capture and recapture method to estimate the population size of men who have sex with men among college students in Hangzhou

Objective To determine current same-sex social software usage among college students in Hangzhou and to estimate the population size,as to provide evidence for HIV/AIDS prevention among male college students who have sex with men (MSM).Methods On 15th April 2017,the numbers of MSM among college students from universities located in advanced education zone were collected according to log records in same-sex social software,and the process was repeated after 7 days.The population size of MSM among college students in Hangzhou was recorded by the capture and recapture method.Results The population size of MSM was about 2 636 (95%CI:2 522-2 750),with average age (20.75±2.00) years old.Average weight and height was (63.58± 11.82) kg and (175.86±8.89) cm.Among the classification of sex roles,21.11% (400) played both the top and bottom role,21.39%(405) reported only the bottom role and 14.78%(280) played the top role.Conclusion Same-sex social software provides a new approach to estimate the population size of MSM by using the application of capture and recapture method.In the meanwhile,it provides a new carrier to start propaganda and education work on male homosexuality among young students in high school.It is worth considering to carry out more studies on roles of new media technology in HIV/AIDS program in the future.