ArticleJournal of studies on alcohol and drugs2026
Heterogeneity of Within-Day Simultaneous Alcohol and Cannabis Use Behaviors Among Young Adults: A Multilevel Latent Class Analysis.
Article in Journal of studies on alcohol and drugs, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors.
Funding
Abstract
objectiveSimultaneous alcohol and cannabis use is prevalent among young adults and linked with heavy use and related harms. Days with simultaneous use have been linked with poorer proximal outcomes than days involving only alcohol or cannabis, but findings are mixed. Importantly, days with simultaneous use vary greatly with respect to level and timing of use, and other substance use. Thus, all simultaneous use days may not carry the same risks, which partially explains the discrepancies. We aimed to characterize heterogeneity across simultaneous use days via an innovative statistical method applied to daily data--multilevel latent class analysis (MLCA)--and identify features of days most strongly linked to same-day harms and motives.
methodParticipants were
resultsMLCA identified four day-level latent classes of simultaneous use occasions: Alcohol-Focused (43% of days), Cannabis-Focused (35%), Heavy Use (14%), and Early-Day Use (8%). Same-day harms were more likely on heavy use days than on other days, and day-level classes varied significantly across three same-day motivations for simultaneous use: to be social, because it was offered, and to have fun.
conclusionsSimultaneous alcohol and cannabis use days are highly varied. Heavy use days, characterized by the 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.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.