Roth, Eric A.Cui, ZishanRich, AshleighLachowsky, Nathan J.Sereda, PaulCard, KifferMoore, DavidHogg, Robert S.2022-08-192022-08-1920182018Roth, E. A., Cui, Z., Rich, A., Lachowsky, N., Sereda, P., Card, K., Moore, D., & Hogg, R. (2018). “Repeated Measures Analysis of Alcohol Patterns Among Gay and Bisexual Men in the Momentum Health Study.” Substance Use & Misuse, 53(5), 816–827. https://doi.org/10.1080/10826084.2017.1388259https://doi.org/10.1080/10826084.2017.1388259http://hdl.handle.net/1828/14107We thank our community colleagues at the Health Initiative for Men, YouthCO HIV & Hep C Society of BC, and Positive Living Society of BC for their support. We also thank the research participants for sharing their important data with the Momentum Health Study.Background: This study analyzed repeated study visits (n=2,624) of 693 gay and bisexual men (GBM) in the Momentum Health Study from July, 2012 - June, 2015. Based on recent crosssectional analyses, we hypothesized that over the study period: 1) hazardous drinking levels would remain high, 2) GBM classified as Hazardous Drinkers will be consistently associated with high risk sex, and 3) GBM classified as Always Hazardous Drinkers differ significantly from Sometimes Hazardous Drinkers. Methods: AUDIT classified participants as Non-Hazardous Drinkers or Hazardous Drinkers, the Cochran-Mantel-Haenszel Test assessed hazardous drinking trends, and Generalized Estimating Equations (GEE) analysis identified Hazardous Drinking covariates. Logistic regression analysis of participants with at least two study visits (575) compared those who were Sometimes Hazardous Drinkers (n=171) with Always Hazardous Drinkers (n=129). Results: At baseline 40% of participants were Hazardous Drinkers, but there was a significant decline in hazardous drinking by visit and Hazardous Drinkers were not significantly associated with high risk sex. Always Hazardous Drinkers had significantly more high risk sex and gay bar attendance, but less often sought Internet sex partners compared to Sometimes Hazardous Drinkers. Conclusions: Analyses did not support the first two hypotheses, but distinguishing between Always and Sometimes Hazardous drinkers identified a young GBM sub-group associated with significantly higher levels of high risk sex and social support measures. These results suggest interventions programs based on Social Norms Theory, which predicts peer norms among youth are important factors in regulating drinking patterns, may be effective for these men.enGay and bisexual mengay barsHazardous DrinkingAUDITrepeated measures analysisCentre for Addictions Research of BC (CARBC)Canadian Institute for Substance Use Research (CISUR)PostprintDepartment of AnthropologySchool of Public Health and Social Policy