DIFFERENTIAL PATTERNS OF SEXUAL VIOLENCE AMONG MEN WHO HAVE SEX WITH MEN (MSM) VERSUS INJECTION DRUG USING (IDU) MEN

P Braitstein^1,2, J Asselin¹, K Chan¹, K Li¹, A Schilder¹, P Spittal¹, M Tyndall^1,2, MT Schechter^1,2, RS Hogg^1,2
1British Columbia Centre for Excellence in HIV/AIDS; ²Department of Health Care and Epidemiology, University of British Columbia, Vancouver, British Columbia

Objective: To compare prevalence and outcomes of age-specific sexual violence between two populations of men at risk for HIV.
Methods: Analyses of first incident of sexual violence were conducted, examining HIV risk and other behaviors. Controlling for sociodemographics, multivariate regression was used to assess age-specific sexual violence (vs. never) against outcomes.
Results: 140/498 MSM (28%) and 173/932 IDUs (19%) reported ever having experienced sexual violence. The 15% MSM who experienced child sexual abuse (CSA) (aged <13) were more likely to ever be in the sex trade (AOR 2.1, 95% CI: 1.1 – 3.9), have attempted suicide (AOR 3.5, 95% CI: 1.9 – 6.6), and have diagnosed mood disorders (AOR 2.5, 95% CI: 1.4 – 4.5). The 12% of IDU abused as children were more likely to have been in the sex trade (AOR 4.3, 95% CI: 2.7 – 6.9), have accidentally overdosed (AOR 1.9, 95% CI: 1.3 – 2.9), have diagnosed mental illness (AOR 1.9, 95% CI: 1.3 – 2.9), and binge on alcohol (AOR 2.2, 95% CI: 1.4 – 3.3). There were no statistical differences among MSM who experienced sexual violence in adolescence (ages 13 – 17), while IDU had increased sex trade involvement (AOR 4.0, 95% CI: 1.8 – 9.0), & attempted suicides (AOR 3.1, 95% CI: 1.8 – 5.4). MSM who experienced sexual violence in adulthood had more casual unprotected receptive anal sex (AOR 2.4, 95% CI: 1.0 – 5.6), attempted suicide (AOR 3.1, 95% CI: 1.3 – 7.1), and diagnosed mood disorders (AOR 2.5, 95% CI: 1.2 – 5.3), while IDU had increased sex trade involvement (AOR: 19.3, 95% CI: 2.6 – 141.6).
Conclusions: MSM experience more sexual violence than IDU men, but prevalence of CSA is approximately equal between groups. All sexual violence, particularly CSA, is associated with a variety of risk activities and behaviors.