Are all alcohol and energy drink users the same? Examining individual variation in relation to alcohol mixed with energy drink use, risky drinking, and consequences

Individuals who consume alcohol mixed with energy drinks (AmEDs) have been identified as higher-risk drinkers, as they are more prone to drink increased amounts of alcohol and experience more consequences compared with non-AmED users. The present study examined differential AmED use and alcohol consumption simultaneously as multidimensional risk behaviors among AmED users. Students who identified as drinkers and current AmED users (n = 195) completed a Web-based survey related to their AmED consumption and typical drinking patterns. Latent profile analysis was used to classify participants into distinct AmED user profiles. Profiles were then compared on AmED-based cognitive factors (e.g., expectancies, norms) and alcohol-related consequences. Four AmED user profiles emerged: moderate drinker, low proportion AmED users (ML); heavy drinker, low proportion AmED users (HL); moderate drinker, high proportion AmED users (MH); and heavy drinker, high proportion AmED users (HH). Membership in higher-proportion AmED groups was associated with more positive AmED expectancies and perceived norms. No significant differences were observed in the amount of consequences endorsed by HL and HHs; however, MHs experienced significantly more alcohol-related physical consequences than MLs. This suggests that increased use of AmEDs is associated with increased risk of experiencing alcohol-related consequences for moderate drinkers. Screening students for AmED use could be used as a novel, inexpensive tool to identify high-risk drinkers for targeted interventions aimed at reducing alcohol consumption and related problems.