Multilevel latent class analysis reveals diverse simultaneous alcohol and cannabis use patterns, suggesting implications for harm reduction.
Simultaneous alcohol and cannabis use days are highly varied. Heavy Use Days characterized by level of alcohol/cannabis use and engagement in other substance use were most strongly linked with harms, but timing of use in a day also distinguished patterns of use. Studies investigating the role of additional substances are warranted.
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Lanza et al. (2026) studied this question.
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