Barcelona 2013
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| Abstract #318 - E-Posters English | ||||
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Session: 50.114: E-Posters English (Poster) on Sunday in Chaired by Authors: Presenting Author: Mr Nathan Lachowsky - University of Guelph, Canada |
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| Additional Authors: Dr. Jordi Casabona, Sra Cristina Sanclemente, Dra. Anna Esteve, Dra. Victoria Gonzalez, Grupo HIVITS TS, | ||||
| Aim: Globally, MSM continue to bear a disproportionately high burden of HIV and other STIs. In particular, younger men who have sex with men (YMSM) have been reported to have increasing HIV incidence rates in the United States and increased vulnerability to new infections. Condoms remain an important primary prevention tool for HIV and other sexually transmitted infection among this population. Novel statistical approached that measure within-person condom use across partner types and anal modalities, instead of stratifying by these factors, may better identify factors to inform targeted and relevant health promotion efforts. In New Zealand, no research to date has specifically investigated condom use among YMSM. | ||||
| Method / Issue: Using the 2006, 2008 and 2011 rounds of the Gay Auckland Periodic Sex Survey and Gay men?s Online Sex Survey, the study included 2414 younger MSM (YMSM, aged 16-29) who reported anal intercourse in the last six months in four possible scenarios (insertive or receptive with casual partners, insertive or receptive with regular partner). High condom use (always/almost always) was reported for each person for up to four scenarios (n=5158 reports). Controlling for each individual using a random variable, factors associated with high condom use were identified with backward stepwise multivariate mixed effect logistic regression (retaining variables at p<0.05; adjusted OR and 95%CI reported). | ||||
| Results / Comments: High condom use was reported for 63.6% of all scenarios across modalities: 47.5% with regular partner versus 74.9% with casual partners [0.04 (0.03,0.05)]. Within-individual explained most of the random variation in condom use (intraclass correlation coefficient=0.79). High condom use was greater for YMSM who: reported multiple sexual partners [e.g. 6-10 versus one: 9.17 [4.17,20.19]); believed they were "definitely HIV-negative" versus "didn't know" [3.84 (1.57,9.42)]; were not diagnosed with an STI in the past year [2.60 (1.33,5.08)]; were exclusively insertive versus both insertive and receptive during anal intercourse [1.92 (1.06,3.48)]; and identified as bisexual versus gay [1.89 (1.12,3.20)]. High condom use was lower for YMSM who: disagreed "condoms are OK as part of sex" [0.04 (0.01,0.11)]; agreed "condoms reduce sensitivity" [0.08 (0.05,0.13)]; agreed they would "rather risk HIV than use a condom" [0.09 (0.05,0.17)]. | ||||
| Discussion: Condom use is highly clustered within the person irrespective of partner type and anal modality. No sociodemographic variables were significantly associated with high condom use, except for reporting a bisexual identity. Behavioural and attitudinal factors largely explained differences in condom use among YMSM in New Zealand. Research that accounts for other individual, dyadic, and community-level factors may better inform future condom use promotion efforts. | ||||
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