绵阳市男男性接触者艾滋病知识和性行为特征分析

Analysis on AIDS knowledge for MSM contacts and sexual behavior characteristics in Mianyang

目的了解绵阳市男男性接触者(men who have sex with men,MSM)艾滋病知识知晓和性行为特征现状,分析其无保护肛交的影响因素。方法2018年2-10月采用滚雪球抽样方法,对绵阳市MSM进行艾滋病知识、性行为学等现状调查和血清学检测。结果调查合格问卷1132份,MSM艾滋病知识知晓率96.6%,交友软件/互联网寻找性伴89.6%,47.5%有多性伴。72.9%近6个月及91.2%近1次肛交有保护,不同地区差异有统计学意义(χ^(2)=69.622、38.544,P<0.01)。近6个月肛交无保护的HIV阳性率为8.4%,高于有保护的1.6%,差异有统计学意义(χ^(2)=27.305,P<0.01)。多因素分析结果显示,年龄>30岁(OR=1.254)、农民/民工(OR=2.258)、外县/市/区户籍(OR=1.822)、近6个月多性伴(OR=1.429)为无保护肛交的危险因素,本地居住时间越长(OR=0.632)、性生活满意度(OR=0.558)、中/高安全感(OR=0.40)、近1年接受预防服务(OR=0.370)为无保护肛交的保护因素。结论绵阳市MSM艾滋病知识知晓率较高,肛交保护地区间不平衡。无保护肛交与人口学特征、性行为、性生活满意度和安全感相关,应针对性开展行为干预。

Objective To analyze the factors of unprotected anal sex by understanding the status quo of AIDS knowledge and sexual behavior characteristics among men who have sex with men(MSM).Methods The snowball sampling method was applied to conduct AIDS knowledge,sexual behavior surveys and serological tests on MSM in Mianyang from February to October 2018.Results A total of 1132 questionnaires with the awareness rate of MSM for AIDS knowledge in 96.6%were surveyed,the percent of respondents seeking sexual partners in the dating software/Internet was 89.6%,and 47.5%had multiple sexual partners.The 72.9%respondents were found to have protected anal sex during the last 6 months,and 91.2%respondents were found to have protected anal sex once approximately,and the differences in varying regions were statistically significant(χ^(2)=69.622,38.544,P<0.01).The positive rate of HIV for unprotected anal sex in the last 6 months was 8.4%,which was higher than that of protected HIV in 1.6%,and the difference was statistically significant(χ^(2)=27.305,P<0.01).Multivariate analysis results showed that age>30 years old(OR=1.254),farmers/migrant workers(OR=2.258),non-local county/city/district household registration(OR=1.822)and multiple sexual partners during the last 6 months(OR=1.429)were risk factors for unprotected anal sex,longer local residence duration(OR=0.632),satisfaction for sexual life(OR=0.558),medium/high safety(OR=0.40),and prevention service for the last one years(OR=0.370)were protective factors for unprotected anal sex.Conclusion The awareness rate for MSM AIDS knowledge in Mianyang is high,the protected anal sex is unbalanced among regions.Unprotected anal sex is associated with demographic characteristics,sexual behavior,satisfaction for sexual life and a sense of security,and targeted behavioral intervention should be implemented.