Evidence map›Paper›PMID 29779761›Full record

ArticleDrug and alcohol dependence2018

Planting the seed for marijuana use: Changes in exposure to medical marijuana advertising and subsequent adolescent marijuana use, cognitions, and consequences over seven years.

Elizabeth J D'Amico, Anthony Rodriguez, Joan S Tucker, Eric R Pedersen, Regina A Shih

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Drug and alcohol dependence, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 75 papers.

0numbers the graph read from it
0cells of the map it votes in
75citing 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

75 citing papers in PubMed.

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15 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.

Elizabeth J D'AmicoRAND Corporation, 1776 Main St., Santa Monica, CA 90401, USA. Electronic address: damico@rand.org.
Anthony RodriguezRAND Corporation, 1776 Main St., Santa Monica, CA 90401, USA.
Joan S TuckerRAND Corporation, 1776 Main St., Santa Monica, CA 90401, USA.
Eric R PedersenRAND Corporation, 1776 Main St., Santa Monica, CA 90401, USA.
Regina A ShihRAND Corporation, 1200 S Hayes St, Arlington, VA 22202, USA.

Funding

Brief Voluntary Alcohol and Drug Intervention for Middle School YouthR01AA016577 · NIAAA · RAND CORPORATION · PI D'AMICO, ELIZABETH J. · 2007 to 2011
$4.5M
Adolescent AOD Use Trajectories: The Role of Race and EthnicityR01AA020883 · NIAAA · RAND CORPORATION · PI D'AMICO, ELIZABETH J. · 2012 to 2016
$3.5M
NIAAA NIH HHS R01 AA016577NIAAA NIH HHS R01 AA020883
6 · The paper itself

Abstract

backgroundMarijuana use during adolescence is associated with neurocognitive deficits and poorer functioning across several domains. It is likely that more states will pass both medical and recreational marijuana legalization laws in the coming elections; therefore, we must begin to look more closely at the longitudinal effects of medical marijuana (MM) advertising on marijuana use among adolescents so that we can better understand effects that this advertising may have on their subsequent marijuana use and related outcomes.

methodsWe followed two cohorts of 7th and 8th graders (mean age 13) recruited from school districts in Southern California from 2010 until 2017 (mean age 19) to examine effects of MM advertising on adolescents' marijuana use, cognitions, and consequences over seven years. Latent growth models examined trajectories of self-reported exposure to medical marijuana ads in the past three months and trajectories of use, cognitions, and consequences.

resultsHigher average exposure to MM advertising was associated with higher average use, intentions to use, positive expectancies, and negative consequences. Similarly, higher rates of change in MM advertising exposure were associated with higher rates of change in use, intentions, expectancies, and consequences over seven years.

conclusionsResults suggest that exposure to MM advertising may not only play a significant role in shaping attitudes about marijuana, but may also contribute to increased marijuana use and related negative consequences throughout adolescence. This highlights the importance of considering regulations for marijuana advertising, similar to regulations in place for the promotion of tobacco and alcohol in the U.S.

Indexed as

CognitionMedical MarijuanaAdolescentAdvertisingCaliforniaChildFemaleHumansIntentionLegislation, DrugMaleMarijuana AbuseMarijuana UseSchoolsTime FactorsYoung AdultMedical MarijuanaAdolescentsAdvertisingLongitudinalMarijuana legislationMarijuana use

Identifiers

PMID29779761
PMCPMC6744951

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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.