Evidence map›Paper›PMID 41576998›Full record

ArticleAmerican journal of preventive medicine2026

State Cannabis and Alcohol Policy Environments: Associations With College Students' Use of Cannabis, Alcohol, and Both Substances.

David C R Kerr, Harold Bae, Timothy S Naimi, Meenakshi S Subbaraman, Haley M Hummel, Marlene C Lira

Abstract read
In one paragraph

Article in American journal of preventive medicine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

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0cells of the map it votes in
2citing papers in PubMed
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1 · What the graph read from it

What it found

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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.

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3 · Its place in the literature

Who cites it

2 citing papers in PubMed.

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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

6 authors.

David C R KerrSchool of Psychological Science, Oregon State University, Corvallis, Oregon. Electronic address: david.kerr@oregonstate.edu.
Harold BaeSchool of Nutrition and Public Health, College of Health, Oregon State University, Corvallis, Oregon.
Timothy S NaimiCanadian Institute for Substance Use Research, University of Victoria, Victoria, Canada.
Meenakshi S SubbaramanBehavioral Health and Recovery Studies, Public Health Institute, Oakland, California.
Haley M HummelSchool of Psychological Science, Oregon State University, Corvallis, Oregon.
Marlene C LiraBloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland.

Funding

Impact of Marijuana Policies on Alcohol Use and Alcohol-Related MortalityR01AA026268 · NIAAA · BOSTON MEDICAL CENTER · PI NAIMI, TIMOTHY SIMONDS · 2018 to 2021
$2.5M
Implications of state alcohol policy for college students' binge drinking, suicidal behavior, and sexual assault victimizationR21AA030389 · NIAAA · OREGON STATE UNIVERSITY · PI KERR, DAVID C. R. · 2023 to 2023
$383k
NIAAA NIH HHS R01 AA026268NIAAA NIH HHS R21 AA030389
6 · The paper itself

Abstract

introductionCannabis policies differ between states that have legalized cannabis use and within states over time after legalization milestones. A continuous measure of state cannabis policy environments was examined in relation to college students' cannabis and alcohol use, accounting for concurrent state alcohol policies.

methodsUndergraduates (N=902,486) aged 18-24 years from 591 four-year institutions in 47 states completed a cross-sectional survey between 2008 and 2019. Time-varying, state-level Cannabis Policy Scale and Alcohol Policy Scale scores were sums of 17 and 29 policies, respectively, weighted by efficacy and state-level implementation. Outcomes were any 30-day use and frequent use (≥20 days) of cannabis and alcohol, 2-week binge drinking (≥5 drinks in a sitting), and co-use (binge drinking and frequent cannabis use). Data were analyzed in 2024-2025.

resultsHigher Cannabis Policy Scale scores (greater restrictiveness) were associated with significantly lower odds of cannabis use, frequent cannabis use, and co-use (OR=0.97 [0.96-0.98]; 0.93 [0.91-0.94]; and 0.94 [0.92-0.96], respectively) but not significantly associated with alcohol use outcomes. Higher Alcohol Policy Scale scores were significantly associated with lower odds of every cannabis, alcohol, and co-use outcome. Cannabis Policy Scale and Alcohol Policy Scale effects generally were significant for underage students (aged 18-20 years) but stronger for older students (aged 21-24 years).

conclusionsUnder less restrictive state cannabis and alcohol policy regimes, college students were more apt to use cannabis and alcohol frequently and concurrently. To improve students' well-being, campus- and community-level policymakers can build on strong state policy environments or compensate for weak ones, using Alcohol Policy Scale and Cannabis Policy Scale as tools to identify these needs.

Indexed as

Alcohol DrinkingAlcohol Drinking in CollegeMarijuana SmokingMarijuana UseStudentsAdolescentCross-Sectional StudiesFemaleHumansMaleSurveys and QuestionnairesUnited StatesUniversitiesYoung Adult

Identifiers

PMID41576998
PMCPMC13248224

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Registered trials

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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.