内蒙古男男性行为人群HIV及梅毒感染影响因素的 多元非条件逐步Logistic回归分析

摘要:目的　了解内蒙古地区男男性行为人群（MSM）艾滋病（HIV）、梅毒及艾滋病（HIV）合并梅毒感染状况及其影响因素。方法　通过横断面调查，收集一般人口学、行为学及安全套使用等信息，并采集血液标本进行HIV和梅毒抗体检测。结果　共调查及检测3066名MSM，多元非条件逐步Logistic回归分析结果显示:最近1周与同性发生性行为次数（OR＝1.321）是HIV感染的危险因素；最近6个月与同性发生商业性行为是HIV（OR＝1.664）、梅毒（OR＝1.802）和HIV合并梅毒（OR＝1.791）感染的危险因素；最近6个月与同性发生肛交性行为时有时使用安全套是HIV（OR＝0.108）、梅毒（OR＝0.242）及HIV合并梅毒（OR＝0.160）感染的保护因素；最近6个月与同性发生肛交性行为时每次使用安全套亦是HIV（OR＝0.057）、梅毒（OR＝0.190）及HIV合并梅毒（OR＝0.096）感染的保护因素；在本地居住时间大于6个月是HIV（OR＝0.712）和HIV合并梅毒（OR＝0.746）感染的保护因素。结论　男男性行为人群（MSM）HIV、梅毒及HIV合并梅毒感染的影响因素较复杂，应采取有效措施防治。

Multi-classification Logistic regression analysis of factors associated with HIV and syphilis infection among men who have sex with men in Inner Mongolia

Abstract: Objective To investigate the distribution and factors associated with HIV, syphilis and HIV-syphilis co-infection among Men who have sex with men (MSM) in Inner Mongolia. Methods Information on demographic characteristics, behaviors on sex and condom use were collected by Cross-sectional studies, and the blood samples were tested for HIV and syphilis infection. Results In 3066 participants, it was showed in the multivariate Logistic regression analysis that the number of sexual behavior with men in last a week (OR: 1.321) were the risk factors for HIV infection. Having commercial sexual behavior with men in the past six months was the risk factors for HIV infection (OR: 1.664), syphilis infection (OR: 1.802) and HIV-syphilis co-infection (OR: 1.791). Using condoms occasionally during the sexual intercourse in the past six months were the protecting factors for HIV infection (OR: 0.108), syphilis infection (OR: 0.242) and HIV-syphilis co-infection (OR: 0.160). Using condoms constantly during sexual intercourses in the past six months were also the protecting factors for HIV infection (OR: 0.190), syphilis infection (OR: 0.096) and HIV-syphilis co-infection (OR: 0.057). Local residence time longer than six months were the protecting factors for HIV infection (OR: 0.712) and HIV-syphilis co-infection (OR: 0.746). Conclusion The influencing factors of HIV infection, syphilis infection and HIV-syphilis co-infection are complicated, suggesting some effective measures should be taken to prevent the infection of HIV, syphilis and HIV-syphilis co-infection.