Evidence map›Paper›PMID 31792712›Full record

ArticlePrevention science : the official journal of the Society for Prevention Research2020

Has Cannabis Use Among Youth Increased After Changes in Its Legal Status? A Commentary on Use of Monitoring the Future for Analyses of Changes in State Cannabis Laws.

Greg Midgette, Peter Reuter

Abstract read
In one paragraph

Article in Prevention science : the official journal of the Society for Prevention Research, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing 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

16 citing papers in PubMed.

  1. Article
  2. Estimating Price Elasticity of Cannabis Use Among U.S. Adolescents: Evidence From States With Recreational Cannabis Commercialization.The Journal of adolescent health : official publication of the Society for Adolescent Medicine · 2026
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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

2 authors.

Greg MidgetteDepartment of Criminology & Criminal Justice, University of Maryland, 2220 LeFrak Hall, College Park, MD, USA. gem@umd.edu.ORCID 0000-0003-2038-2950
Peter ReuterDepartment of Criminology & Criminal Justice, University of Maryland, 2220 LeFrak Hall, College Park, MD, USA.

Funding

Marijuana Legalization: Assessing the Impact of Local Regulatory PoliciesR01DA039293 · NIDA · MULTNOMAH COUNTY HEALTH DEPARTMENT · PI DILLEY, JULIA ANN · 2015 to 2024
$3.6M
NIDA NIH HHS 1R01DA039293NIDA NIH HHS R01 DA039293
6 · The paper itself

Abstract

As US states move toward various forms of adult access to cannabis, there has been a great interest in measuring the impact of such changes on adolescent cannabis use. Two recent prominent analyses have used Monitoring the Future (MTF), a nationally representative survey of students, to examine the effects. We compared MTF data for California and for Washington State with other survey data on use by adolescents in those states. In both studies, findings based on MTF were different from those using other larger, state-representative surveys. The discrepancy reflects the high within-state variation in prevalence rates and the small number of schools in MTF state samples. Using the Washington Health Youth Survey, we estimate that after recreational cannabis legalization past 30-day cannabis use prevalence in grade 8 decreased by 22.0%, in grade 10 prevalence decreased by 12.7%, and no effect in grade 12. These trends are consistent with those in states without recreational cannabis laws, suggesting that legalization did not impact adolescent use prevalence. Long-term trends in MTF are consistent with other data, but year-to-year volatility in state-level series undermines the survey's suitability for evaluation of state cannabis policy changes. Survey-based analyses at the state level need to be cross-validated with findings from other data sources. When findings are disparate and methodological rigor is equivalent, analyses of data sources specifically designed to describe state-level phenomena are more credible.

Indexed as

Legislation, DrugAdolescentCaliforniaDatabases, FactualHumansMarijuana SmokingSurveys and QuestionnairesWashingtonAdolescent drug useCannabisPolicy analysisSurvey research methods

Identifiers

PMID31792712
PMCPMC6960330

What OpenQuestion holds

Textmetadata
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Read underepoch 390

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.