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Predictors of HIV infection among MSM in Beijing

X. Ma1, S.Y. Chen2, J. Zhao3, H.F. Raymond2, X. He1, M. Xu1, Y. Zhao1, D. Xia1, H. Lu1, X. Pang1, W. Mcfarland2

Background: Men who have sex with men are at high risk for HIV infection. They are often difficult to reach in China due to stigma associated with this population. We used respondent driven sampling strategies to recruit MSM and logistic regression to investigate risk factors associated with HIV infection.

Methods: MSM were recruited by respondent driven sampling strategies between September and December 2005. Ten MSM were recruited as seeds and offered the opportunity to recruit their peers. All subjects were screened for eligibility before enrollment and asked to recruit up to 3 others. Interviews included detailed questions about sexual risk behavior and HIV testing and knowledge. Predictors of HIV infection were assessed using multiple logistic regression.

Results: Of 427 MSM recruited, 313(73%) were single, 300(70%) had a high school education or less, and 164(38%) had a monthly income less than US$125. The mean age was 29 (range 16-72) and the mean age at first anal sex was 22 (range 8-46). Of 56 confirmed syphilis cases, 45(80%) were unaware of their status. For past sex history, 215(50.4%) reported at least two anal sex partners in the past month, 240(56.2%) reported unprotected insertive anal intercourse and 230(53.9%) reported unprotected receptive anal intercourse in the past 6 months. Significant predictors of HIV infection included knowing someone who had died of HIV/AIDS (AOR=2.7; 95%CI: 1.1-6.6) and not having heard of HIV prior to the survey (AOR=3.2; 95%CI: 1.3-7.6). HIV prevalence was 6.1%.

Conclusions: HIV/AIDS unawareness was strongly associated with HIV infection. A substantial proportion of confirmed syphilis cases were unaware of their status. Also interesting are some of the factors that did not predict risk in this sample, including marital status, income, age, unprotected sex, and number of anal sex partners. These results have important implications for prevention programs targeting MSM and their partners.

AIDS 2006 - XVI International AIDS Conference
Abstract no. CDC0094

Suggested Citation
"X.Ma, et al. Predictors of HIV infection among MSM in Beijing. : AIDS 2006 - XVI International AIDS Conference: Abstract no. CDC0094"