Evidence map›Paper›PMID 32417362›Full record

ArticleDrug and alcohol dependence2020

Alcohol and marijuana co-use: Consequences, subjective intoxication, and the operationalization of simultaneous use.

Alexander W Sokolovsky, Rachel L Gunn, Lauren Micalizzi, Helene R White, Kristina M Jackson

Abstract readMulticenter Study
In one paragraph

Article in Drug and alcohol dependence, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 119 papers.

0numbers the graph read from it
0cells of the map it votes in
119citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

119 citing papers in PubMed.

  1. Trial
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  8. Characterizing Alcohol and Cannabis Co-use and Related Harms Among Transgender and Gender Diverse Youth.Prevention science : the official journal of the Society for Prevention Research · 2026
    Article
  9. Day-level latent classes of alcohol and cannabis use motives: Associations by combined use, level of use, and consequences.Psychology of addictive behaviors : journal of the Society of Psychologists in Addictive Behaviors · 2026
    Article
  10. Binge alcohol and cannabis co-use associated with depression in Black men.Psychology of addictive behaviors : journal of the Society of Psychologists in Addictive Behaviors · 2026
    Article
  11. Observational
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  17. Alcohol and Cannabis Use and Co-Use among Ethnic Groups in California.Journal of immigrant and minority health · 2025
    Article
  18. Article
  19. Article
  20. Article

59 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Alexander W SokolovskyCenter for Alcohol and Addiction Studies, Brown University, Box G-S121-4, Providence, RI, 02912, United States. Electronic address: alexander_sokolovsky@brown.edu.
Rachel L GunnCenter for Alcohol and Addiction Studies, Brown University, Box G-S121-4, Providence, RI, 02912, United States. Electronic address: rachel_gunn@brown.edu.
Lauren MicalizziCenter for Alcohol and Addiction Studies, Brown University, Box G-S121-4, Providence, RI, 02912, United States; University of Saint Joseph, 1678 Asylum Avenue, West Hartford, CT, 06117, United States. Electronic address: lauren_micalizzi@brown.edu.
Helene R WhiteRutgers Center of Alcohol Studies, 607 Allison Road, Piscataway, NJ, 08854-8001, United States. Electronic address: hewhite@smithers.rutgers.edu.
Kristina M JacksonCenter for Alcohol and Addiction Studies, Brown University, Box G-S121-4, Providence, RI, 02912, United States. Electronic address: kristina_jackson@brown.edu.

Funding

ALCOHOL INTERVENTION/TREATMENT OUTCOME RESEARCH TRAININGT32AA007459 · NIAAA · BROWN UNIVERSITY · PI ROBERT MIRANDA, PETER M. MONTI · 1986 to 2026
$13.3M
Substance Abuse Intervention/Outcome Research TrainingT32DA016184 · NIDA · BROWN UNIVERSITY · PI Damaris J. Rohsenow, JENNIFER W. TIDEY · 2003 to 2026
$6.1M
Motivational and Contextual Influences on Patterns of Simultaneous Alcohol and Marijuana Use: A Daily Assessment StudyR01DA040880 · NIDA · BROWN UNIVERSITY · PI JACKSON, KRISTINA MELIA, WHITE, HELENE R. · 2016 to 2018
$2.0M
Dual Use of ENDS and Combustible Cigarettes: Shared, Distinct, and Cross-Conditioned ProcessesK08DA048137 · NIDA · BROWN UNIVERSITY · PI SOKOLOVSKY, ALEXANDER WILLIAM · 2020 to 2024
$976k
NIAAA NIH HHS T32 AA007459NIDA NIH HHS K08 DA048137NIDA NIH HHS R01 DA040880NIDA NIH HHS T32 DA016184
6 · The paper itself

Abstract

backgroundAlcohol and marijuana are frequently co-used with overlapping effects. However, the absence of consistent operational definitions delineating simultaneous alcohol and marijuana use (SAM) from concurrent use (CAM) challenges consistent inferences about these behaviors. This study first examined whether daily alcohol and marijuana co-use predicted substance-use related consequences and subjective intoxication; and then evaluated whether competing operationalizations of SAM and CAM were associated with differences in these outcomes on co-use days.

methodsA sample of 341 young adult college students who reported past-month use of both alcohol and marijuana "at the same time so that their effects overlapped" completed a two-wave survey with paired 28-day daily experience sampling bursts examining alcohol and marijuana co-use. Outcomes were (a) daily substance-use related consequences; and (b) daily subjective intoxication. Focal predictors were daily drinks and marijuana uses; daily co-use versus single-substance use (Aim 1) or CAM versus SAM (Aim 2); and their interaction.

resultsParticipants reported more negative consequences on co-use days versus marijuana-only days and greater subjective intoxication relative to alcohol or marijuana-only days. Competing operationalizations of SAM, defined as daily co-use occurring within 1-240 min in increments of 1 min, found no difference in consequences or subjective intoxication regardless of operationalization.

conclusionCo-use days involve greater risk than alcohol-only or marijuana-only days. Although there was no evidence of additional daily risk from simultaneous use regardless of the timeframe used to operationalize it, investigating these effects remains challenging due to the generally small timeframe between substances on co-use days in this sample.

Indexed as

AdolescentAlcohol DrinkingAlcoholic IntoxicationComorbidityFemaleFollow-Up StudiesHumansMaleMarijuana UseStudentsSurveys and QuestionnairesUniversitiesYoung AdultAlcoholCAMConcurrentCo-useMarijuanaSAMSimultaneous

Identifiers

PMID32417362
PMCPMC7370922

What OpenQuestion holds

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Registered trials

None linked

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.