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目的利用针对男男同性性行为人群的专题调查数据快速评估天津市18~29岁该人群HIV发病密度和影响因素。方法收集中国疾病预防控制中心艾滋病综合防治信息系统中2012-2014年天津市艾滋病病例报告数据和BED捕获酶联免疫法检测数据。在知情同意的原则下,对MSM人群进行面对面问卷调查收集人口学、性行为和安全套使用等信息,采集血液进行HIV、梅毒血清学检测,对收集的数据和检测结果进行统计分析。结果纳入研究样本623例,经快速估计计算发病密度为2013年2.65/100人年、2014年1.72/100人年,平均观察人年数为(3.37±1.72)年。首次发生MSM性行为平均年龄约20岁,其中有1/3的人首次MSM性行为是在12~18岁发生的;最近6个月发生性行为的调查对象中最近一次与固定的、临时的、商业的同性性伴发生性行为时安全套使用率分别为55.27%(304/550)、54.55%(300/550)、82.35%(28/34;有516名拒答);近6个月与固定的和临时的性伴发生同性性行为时每次都使用安全套比例分别为46.18%(254/550)、40.55%(223/550);在多因素logistic回归模型中,最近六个月与同性发生肛交性行为时使用安全套的频率(OR=0.404,95%CI:0.226~0.724)、与同性发生过商业性行为(OR=2.466,95%CI:1.380~4.409)与HIV感染的关系具有统计学意义。结论以18~29岁年龄段未婚MSM人群快速评估结果显示天津市2013-2014年MSM人群艾滋病发病状况比较稳定,但该人群HIV感染风险依然存在,需要连续对该人群进行HIV监测。
Objective To rapidly assess the prevalence and influencing factors of HIV incidence in this population of 18-29 years old in Tianjin using the special survey data on the population of gay men and the same sex. Methods The data of HIV / AIDS cases in Tianjin from 2012 to 2014 and the data collected by BED-ELISA were collected from the AIDS Prevention and Control Information System of China Center for Disease Control and Prevention. According to the principle of informed consent, face-to-face questionnaires were collected from MSM population to collect demographic information, sexual behaviors and condom use. Blood was collected for HIV and syphilis serological tests, and the collected data and test results were statistically analyzed. The results were included in the study sample of 623 cases, the rapid estimation of the incidence density of 2.65 / 100 person-years in 2013, 1.72 / 100 person-years in 2014, the average number of observers was (3.37 ± 1.72) years. For the first time, the average age of MSM sexual behavior is about 20 years. One third of them have their first MSM sexual behavior occurring at the age of 12-18 years. The most recent sexual behavior in the last 6 months is related to the fixed, temporary , And condom use rates in commercial same-sex sexual partners were 55.27% (304/550), 54.55% (300/550), 82.35% (28/34; 516 rejected) The rates of condom use in each of the regular and temporary sexual partners were 46.18% (254/550) and 40.55% (223/550), respectively. In the multivariate logistic regression model, The frequency of condom use on anal intercourse (OR = 0.404, 95% CI: 0.226-0.724) and the prevalence of homosexual commercial sex (OR = 2.466, 95% CI: 1.380-4.409) were associated with HIV infection Significance of learning. Conclusion The rapid assessment of MSM population from 18 to 29 years old showed that the incidence of HIV / AIDS in MSM population in Tianjin was relatively stable from 2013 to 2014, but the risk of HIV infection remained in this population. HIV surveillance of this population was needed continuously.