Sexual‐orientation differences in alcohol use trajectories and disorders in emerging adulthood: results from a longitudinal cohort study in the United States

Aims We estimated sexual‐orientation differences in alcohol use trajectories during emerging adulthood, and tested whether alcohol use trajectories mediated sexual‐orientation differences in alcohol use disorders (AUDs). Design Longitudinal self‐reported survey data from the Growing Up Today Study....

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Published in:Addiction (Abingdon, England) England), 2018-09, Vol.113 (9), p.1619-1632
Main Authors: Coulter, Robert W. S., Jun, Hee‐Jin, Calzo, Jerel P., Truong, Nhan L., Mair, Christina, Markovic, Nina, Charlton, Brittany M., Silvestre, Anthony J., Stall, Ron, Corliss, Heather L.
Format: Article
Language:English
Subjects:
Abuse
Adults
Alcohol related disorders
Alcohol use
Alcohol use disorder
alcohol use trajectories
Alcoholism
Alcohols
Belonging
Binge drinking
Bisexuality
Cohort analysis
cohort study
Dependence
Drinking behavior
emerging adulthood
Gays & lesbians
Gender differences
Heterosexuality
Homosexuality
Latent class analysis
Lesbianism
longitudinal latent class analysis
Men
Mens health
Poisson density functions
Polls & surveys
Sexual behavior
Sexual orientation
Substance use disorder
Trajectory analysis
Values
Women
Young adults
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Summary:Aims We estimated sexual‐orientation differences in alcohol use trajectories during emerging adulthood, and tested whether alcohol use trajectories mediated sexual‐orientation differences in alcohol use disorders (AUDs). Design Longitudinal self‐reported survey data from the Growing Up Today Study. Setting United States. Participants A total of 12 493 participants aged 18–25 during the 2003, 2005, 2007 or 2010 surveys. Measurements Stratified by gender, longitudinal latent class analyses estimated alcohol use trajectories (using past‐year frequency, quantity and binge drinking from 2003 to 2010). Multinomial logistic regression tested differences in trajectory class memberships by sexual orientation [comparing completely heterosexual (CH) participants with sexual‐minority subgroups: mainly heterosexual (MH), bisexual (BI) and gay/lesbian (GL) participants]. Modified Poisson regression and mediation analyses tested whether trajectories explained sexual‐orientation differences in AUDs (past‐year DSM‐IV abuse/dependence in 2010). Findings Six alcohol use trajectory classes emerged for women and five for men: these included heavy (23.5/36.9% of women/men), moderate (31.8/26.4% of women/men), escalation to moderately heavy (9.7/12.0% of women/men), light (17.0% for women only), legal (drinking onset at age 21; 11.1/15.7% of women/men) and non‐drinkers (7.0/9.1% of women/men). Compared with CH women, MH and BI women had higher odds of being heavy, moderate, escalation to moderately heavy and light drinkers versus non‐drinkers (odds ratios = 2.02–3.42; P‐values 
ISSN:0965-2140
1360-0443
DOI:10.1111/add.14251