Socializing patterns and their associations with unprotected anal intercourse (UAI), HIV, and syphilis among men who have sex with men (MSM) and transgender women (TW) in Peru
Tuesday, November 5, 2013
: 10:45 a.m. - 11:00 a.m.
Background: Sexual behavior is tied to social behavior, yet the associations between socializing patterns and UAI, HIV and STI prevalences remain underexplored in MSM and TW from developing countries. Methods: We analyzed HIV sentinel surveillance data from MSM/TW in Lima, Peru (2011). We assessed the correlates of the following outcomes: 1) UAI within the past three months, 2) HIV, and 3) syphilis (RPR ≥ 1:16); with the following exposure variables within the past six months: 1) MSM/TW venue attendance, and 2) social network size (number of MSM/TW contacts). All models were stratified by sexual identity and adjusted for age, education, and income. Results: Of 2,760 participants, 42.4% self-identified as homosexual, 32.3% bisexual, 8.9% heterosexual, and 16.4% transgender. UAI was reported by 85.8%, and HIV and syphilis diagnosed in 12.0% and 7.0%, respectively. MSM/TW venue attendance was lowest among heterosexual (68.6%) and highest among homosexual (86.0%) respondents. MSM/TW network size was smallest among heterosexual (median 3; IQR: 1-5) and largest among transgender (6; 2-15) respondents. Among heterosexual participants, those who attended MSM/TW venues were more likely to report UAI than those who did not (AOR: 3.41, p =.01). Each additional MSM/TW social network member was associated with increased odds of HIV in bisexual respondents (AOR: 1.01, p =.02) and syphilis in homosexual respondents (AOR: 1.00, p =.04). Conclusions: UAI, HIV, and syphilis were associated with MSM/TW venue attendance and social network size differently according to sexual identity in Peru, warranting further investigation for implementing social network-based risk reduction interventions.
Social and behavioral sciences
Describe sexual identity-based differences in socializing patterns and their associations with UAI and HIV/syphilis among men who have sex with men and transgender women in Lima, Peru.
Keyword(s): HIV Risk Behavior, Vulnerable Populations
Presenting author's disclosure statement:
Qualified on the content I am responsible for because: I am a 4th year Washington University in St. Louis medical student and current fellow in the UCLA South American Program in HIV Prevention Research (SAPHIR). During this 11-month training program, I have been collaborating with mentors from UCLA and Peruvian research institutions to develop the current work, as well as attending didactic courses on key areas of HIV prevention in Latin America, epidemiology, statistical analysis, and research ethics.
Any relevant financial relationships? No
I agree to comply with the American Public Health Association Conflict of Interest and Commercial Support Guidelines,
and to disclose to the participants any off-label or experimental uses of a commercial product or service discussed
in my presentation.