Evidence map›Paper›PMID 32013937›Full record

ArticleBMC public health2020

Marijuana legalization and historical trends in marijuana use among US residents aged 12-25: results from the 1979-2016 National Survey on drug use and health.

Bin Yu, Xinguang Chen, Xiangfan Chen, Hong Yan

Abstract read
In one paragraph

Article in BMC public health, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 53 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
53citing papers in PubMed, 1 pooled it
–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

53 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
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  6. Article
  7. Characteristics of Cannabis Use Among Head and Neck Cancer Survivors.Laryngoscope investigative otolaryngology · 2025
    Article
  8. The effects of cannabinoids on the kidney.Acta physiologica (Oxford, England) · 2024
    Review
  9. Article
  10. Article
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  18. Tetrahydrocannabinol and dopamine D1 receptor.Frontiers in neuroscience · 2024
    Review
  19. Article
  20. Article
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

4 authors.

Bin YuDepartment of Epidemiology, University of Florida, Gainesville, FL, 32608, USA.
Xinguang ChenDepartment of Epidemiology, University of Florida, Gainesville, FL, 32608, USA.
Xiangfan ChenDepartment of Epidemiology and Health Statistics School of Health Sciences, Wuhan University, Wuhan, 430071, China.
Hong YanDepartment of Epidemiology and Health Statistics School of Health Sciences, Wuhan University, Wuhan, 430071, China. yanhmjxr@aliyun.com.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundMarijuana is the most commonly used illicit drug in the United States. More and more states legalized medical and recreational marijuana use. Adolescents and emerging adults are at high risk for marijuana use. This ecological study aims to examine historical trends in marijuana use among youth along with marijuana legalization.

methodData (n = 749,152) were from the 31-wave National Survey on Drug Use and Health (NSDUH), 1979-2016. Current marijuana use, if use marijuana in the past 30 days, was used as outcome variable. Age was measured as the chronological age self-reported by the participants, period was the year when the survey was conducted, and cohort was estimated as period subtracted age. Rate of current marijuana use was decomposed into independent age, period and cohort effects using the hierarchical age-period-cohort (HAPC) model.

resultsAfter controlling for age, cohort and other covariates, the estimated period effect indicated declines in marijuana use in 1979-1992 and 2001-2006, and increases in 1992-2001 and 2006-2016. The period effect was positively and significantly associated with the proportion of people covered by Medical Marijuana Laws (MML) (correlation coefficients: 0.89 for total sample, 0.81 for males and 0.93 for females, all three p values < 0.01), but was not significantly associated with the Recreational Marijuana Laws (RML). The estimated cohort effect showed a historical decline in marijuana use in those who were born in 1954-1972, a sudden increase in 1972-1984, followed by a decline in 1984-2003.

conclusionThe model derived trends in marijuana use were coincident with the laws and regulations on marijuana and other drugs in the United States since the 1950s. With more states legalizing marijuana use in the United States, emphasizing responsible use would be essential to protect youth from using marijuana.

Indexed as

Legislation, DrugAdolescentAdultChildCohort StudiesFemaleHealth SurveysHumansMaleMarijuana UseUnited StatesYoung AdultAdolescents and young adultsHAPC modelMarijuanaUnited States

Identifiers

PMID32013937
PMCPMC6998313

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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.