南京市男男性行为人群梅毒感染情况及影响因素调查

目的:了解南京市男男性行为人群(men who have sex with men,MSM)梅毒感染情况及影响因素,为行为干预工作提供科学数据?方法:在南京市MSM社区使用滚雪球法招募MSM进行问卷调查,了解其社会人口学?高危行为特征;采集静脉血进行HIV和梅毒抗体检测?结果:共调查661例MSM,所调查的MSM平均年龄为(27.44 ± 7.94)岁,未婚者占84.0%,高中及以上学历占90.5%?近6个月性行为调查性伴数大于10人的占5.0%,最近6个月肛交每次使用安全套的比例为36.0%,3.9%曾有过商业性男性性服务,4.5%曾为男性提供过商业性服务,21.0%曾与女性发生性关系?所调查的MSM的梅毒感染率为11.5%?多因素Logistic回归分析结果显示,年龄> 25岁(OR=4.20,95%CI:2.26~7.80)?非本地户籍(OR=1.67,95%CI:1.00~2.78)?寻找性伴场所为浴池(OR=2.29,95%CI:1.26~4.15)以及近1年做过性病检查或治疗(OR=2.15,95%CI:1.25~3.69)是梅毒感染的影响因素?结论:南京市 MSM无保护性行为发生率高,梅毒感染率已达一定水平,应及时采取有效的干预措施?

Syphilis prevalence and its associated factors among men who have sex with men in Nanjing

Objective:To investigate the prevalence and risk factors for syphilis among men who have sex with men (MSM) in Nanjing. Methods:A face-face questionnaire interview was conducted among MSM by snowball sampling method in Nanjing from March to July,2009. Socio-demographic,behavioral and other characteristics were included in the questionnaire. Bivariate and multivariate logistic regression model was constructed to evaluate independent factor associated with syphilis. Results:A total of 661 MSM were recruited. The mean age of these participants was 27.44 years. Among them 84.0% were unmarried,and 90.5% had an education beyond senior middle school; in the past 6 months,5.0% had sexual contact with more than 10 male sex partners,the rate of protected anal sex during the past 6 months was 36.0%. The percentage of people who had ever paid for male sex service was 3.9%,who had provided commercial sex service to male was 4.5%,and who had sexual contact with female was 21.0%. Syphilis was diagnosed in 11.5% of these participants,the risk factors independently associated with syphilis clude being older than 25 years (adjusted OR=4.20,95%CI:2.26~7.80),non-local residency(adjusted OR=1.67,95%CI:1.00~2.78),looking for male sex partners from bathhouse(adjusted OR=2.29,95%CI:1.26~4.15),sexually transmitted diseases examination and treatment in 1 year before interview(adjusted OR=2.15,95%CI:1.25~3.69). Conclusion:The rate of unprotected anal sex was high, so was the prevalence of syphilis among MSM. Further efforts are urgently needed to scale-up the prevention of syphilis among MSM.