Co-Use of Cannabis and Alcohol in College Students: Between- and within-Person Associations with Sleep, Mood, and Substance Use Consequences

This study characterized cannabis-alcohol co-use among college students in terms of psychosocial correlates and within-person associations with sleep, mood, and substance use consequences. Although cannabis-alcohol co-use did not present additional sleep- or mood-related risk over alcohol-only use, co-use did increase risk of same-day negative cannabis and alcohol consequences.