Proximal antecedents and acute outcomes of simultaneous alcohol and cannabis use: Systematic review of daily‐ and event‐level studies

Abstract Many studies have revealed that individuals who engage in simultaneous use of alcohol and cannabis report elevated substance‐related consequences relative to those who use only alcohol or cannabis; however, evidence from emerging studies examining within‐person differences across simultaneous use and single substance use occasions is less consistent. This systematic review aimed to synthesize findings from existing day‐ and event‐level studies of within‐person differences in the proximal antecedents and acute outcomes associated with simultaneous use versus single substance use episodes.