男男性行为人群HIV相关行为学特征及其影响因素

目的]了解上海市男男性行为人群（menwhohavesexwithmen，MSM）人类免疫缺陷病毒（HIV）感染相关行为学特征，并分析与男男无保护性行为相关的影响因素。方法]利用信息网络中的上海市男男活动小组和男男论坛，共招募符合筛选条件的调查对象121名。采用中一加项目全球课题设计的统一表格对121人进行面对面问卷调查。结果]调查对象平均年龄为（27．99±5．93）岁；大学及以上教育程度者占74.4％；月均收入≥3000元人民币者占62．9％；单身者占86．0％。121名MSM初次和男性发生性行为的平均年龄为（22．14±5．32）岁；过去半年内受访者的平均性伴数为（3．27±2．77）人。目前有固定男友的受访者占56．14％，但和固定男友之间在性关系上相互忠诚的仅占其中的36．84％。16人在过去半年内和女性有性行为，其中62．8％的受访者曾和女性发生过无保护性行为。45．45％的受访者曾与男性有过无保护性行为，受访者和固定男友间发生无保护性行为的比例高于和多次男性伴间发生无保护性行为的比例（x2=4．32，P〈0．05），也明显高于和偶遇男性伴间发生无保护性行为的比例（x2=10．13，P〈0．01）。77．7％的受访者认为自己有感染HIV的风险。多因素分析表明，与男性发生无保护性行为相关的影响因素为受教育程度、半年内性伴数量和HIV感染自我风险评估情况。结论]受教育程度越低、性伴数量越多的MSM发生无保护性行为的概率越高。认为自己有HIV感染风险的受访者更有可能发生过无保护性行为。因此在今后对存在上述情况的MSM更应加强健康干预。

Characteristics and Influencing Factors of HIV Related Behaviors in Men Who Have Sex with Men

Objective ] To find out characteristics of human immunodeficiency virus （HIV） infection related behaviours among men who have sex with men （MSM） in Shanghai and related influencing factors. Methods ] A total of 121 MSM were recruited through interact and interviewed face to face using questionnaires designed by Sino-Canada Global Research. Results ] The interviewees were at the average age of （27.99 ＋ 5.933） years; 74.4% of them received college or above education; 62.9% earned more than 3 000 yuan per month; 86.0% were single. The average age at first sex with men was （22.14 ± 5.32） years; the average number of sexual partners within the past six months was 3.27± 2.77. The interviewees who had long-term relations accounted for 56.14%, but only 36.84% were loyal to the relations; 16 interviewees had sexual behaviours with female partners within the past six months, among which 62.8% were unprotected; 45.45% interviewees had unprotected sexual behaviours with male partners, and their percentage of unprotected sexual behaviours in long-term relations was significantly higher than that with irregular sexual partners （x2=-4.32, P〈0.05） and occasional sexual partner （x2=10.13, P〈0.01）; 77.7% interviewees believed they were at the risk of HIV infection. The factors influencing unprotected sexual behaviours were education level, number of sexual partners within the past six months and self-evaluation of HIV infection. Conclusion ] The MSM who have less education and more sexual partners are more likely to have unprotected sexual behaviours, and those with self-evaluation of HIV infection tend to have a history of unprotected sexual behaviours. Enhanced health interventions are therefore imperative to be delivered to these MSM.