A Prospective Longitudinal Cohort Study of College Students' Alcohol and Abstinence Displays on Social Media

Purpose: The past decade has seen tremendous growth in research focused on understanding college students' alcohol-related social media displays. However, longitudinal studies remain rare. The pur -pose of this 5-year study was to describe alcohol and abstinence display patterns on Facebook. Methods: This prospective longitudinal cohort study recruited incoming 17-to 19-year-old college students from two universities upon entering college. Trained coders evaluated Facebook profiles monthly over five years to identify alcohol and abstinence displays. Alcohol displays were further categorized as general alcohol use or intoxication/problem drinking references. Analyses included multivariate negative binomial regression. Results: Among 338 participants recruited (mean age = 18.4, SD = .6), 56.1% were female, 74.8% were Caucasian, and 58.8% were from the Midwest college. General alcohol use references were most common in the spring semester of the third year (mean = 3.9 displays; 95% CI: 3.21-4.73), these often included references to a "21 run." Intoxication/problem drinking references were most common in spring semester of the first year (mean = .79 displays, 95% confidence interval: .56-1.10) and second year of college (mean = .77 displays, 95% confidence interval: .54-1.11). There were no gender differences associated with alcohol displays at any time point. Abstinence displays were rare and declined in frequency to a low of four total displays in year 5. Conclusions: This 5-year study is the first to document patterns of alcohol and abstinence displays throughout the undergraduate experience. Findings may inform planning targeted interventions by time point, or longitudinal studies of other substances or on different platforms. (c) 2021 Society for Adolescent Health and Medicine. All rights reserved.