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The current study sought to identify types of group sex acts among HIV-negative men who have sex with men MSM and assess their association with different sexual risk behaviors using cross-sectional data of group sex acts reported during 6 waves — of the Amsterdam MSM Cohort Study. Latent class analysis was performed to identify group sex types based on size, familiarity with partners, location, planning, and drug use. Associations between group sex types and sexual behaviors were evaluated using logistic regression with generalized estimating equations, employing the sample mean as a reference. Data at the level of group sex acts were analyzed, while correcting variance estimations for repeated measurements within MSM.
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Men’s Outreach

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Out of this despair, we came to Sex Addicts Anonymous. We were addicted to sexual behaviors that we returned to over and over, despite the consequences. We might have felt appalled by our acting-out behavior. But when we were in our addiction, we would slip into a kind of trance. Nor is it the result of poor self-control, a lack of morals, or a series of mistakes.
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JMIR Publications

Group sex participation among men and women was associated with heroin and injection drug use, trading or selling sex, and sex while high, compared with no GS participation. Moreover, among men, GS was associated with buying sex and sex with an injection drug user; among women, GS was associated with substance dependence, a history of sexually transmissible infections and crack cocaine use, compared with no GS participation. Data are drawn from an ongoing behavioural substance use and sexual risk reduction intervention trial.
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