MSM人群艾滋病感染状况及影响因素研究

Study on HIV/AIDS infection and its associated factors among MSM

目的了解男男性行为人群(Men who have sex with men,MSM)艾滋病病毒(Human immunodeficiencyvirus,HIV)感染状况,并分析其影响因素,为开展高危性行为干预工作提供依据。方法采用同伴推动抽样法招募研究对象,由经过专门培训的人员进行问卷调查和实验室检测,使用Epi Data 3.2建立数据库,采用SPSS 17.0进行统计分析。结果在过去12个月做过HIV抗体检测的占26.2%(126/474),其中知道检测结果的99.2%(125/126)。首次性行为平均年龄为22.5岁,近6个月平均性伴数为4.5个。最近6个月,7.2%(341/474)的人曾通过付钱的方式得到过男性提供的性服务,10.3%(49/474)的人为了得到钱为男性提供过性服务;31.4%(149/474)的人与女性发生过性关系。男性性伴数是无保护性行为的主要危险因素(P=0.000,OR=5.642)。艾滋病、梅毒和丙型肝炎的感染率分别为2.5%(12/474)、8.0%(38/474)、0.8%(4/474),其中艾滋病和梅毒共患率为0.6%(3/474)。结论 MSM人群普遍存在高危性行为,HIV感染率呈逐年上升的趋势,多性伴等不安全性行为是性病艾滋病感染的主要因素;应进一步加大MSM人群干预的力度,预防和控制艾滋病的传播和蔓延。

Objective To understand HIV/AIDS infection status and its associated factors among men who have sex with men（MSM） so as to provide basis for carrying out high-risk behavior interventions.Methods Respondent-driven sampling method was used to recruit the subjects.Questionnaire surveys and laboratory testing were carried out by specially trained persons.The database was established by Epi Data 3.2 and statistical analysis was performed by SPSS 17.0.Results Of the subjects,26.2%（126/474） had HIV test in the past year and 99.2%（125/126） were informed of the results.The average age of having the first sex was 22.5 years.The average number of sex partners was 4.5 in the past 6 months;7.2%（34/474） of the subjects bought homosexual intercourses,10.3%（49/474） exchanged sex for money and 31.4%（149/474） had heterosexual sex in the past six months.The number of male sex partners was the major risk factor for unprotected sex[（P=0.000,odds ratio（OR）=5.642].The infection rates of HIV/AIDS,syphilis and hepatitis C virus were 2.5%（12/474）,8.0%（38/474） and 0.8%（4/474）,respectively,and the co-infection rate of HIV/AIDS and syphilis was 0.6%（3/474）.Conclusion High risk behaviors are prevalent among MSM,and HIV infection rate tends to increase.Multiple sex partners and unsafe sex were the main factors related to HIV/AIDS and STD infection.Behavioral interventions should be strengthened to control and prevent HIV/AIDS transmission and spread.