Evidence map›Paper›PMID 27797688›Full record

ArticleJournal of studies on alcohol and drugs2016

Cannabis Involvement and Nonsuicidal Self-Injury: A Discordant Twin Approach.

Lauren R Few, Julia D Grant, Elliot C Nelson, Timothy J Trull, Richard A Grucza, Kathleen K Bucholz, Karin J H Verweij, Nicholas G Martin, Dixie J Statham, Pamela A F Madden and 3 more

Open access · greenAbstract read
In one paragraph

Article in Journal of studies on alcohol and drugs, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
1.2field-weighted citation impact, top 17% of its field
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

7 citing papers in PubMed, 21 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Article
  5. Dual-harm in adolescence and associated clinical and parenting factors.Social psychiatry and psychiatric epidemiology · 2022
    Article
  6. Article
  7. Review
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

13 authors at 6 institutions in 4 countries.

Lauren R FewDepartment of Psychiatry, Washington University School of Medicine, St. Louis, Missouri.
Julia D GrantDepartment of Psychiatry, Washington University School of Medicine, St. Louis, Missouri.
Elliot C NelsonDepartment of Psychiatry, Washington University School of Medicine, St. Louis, Missouri.
Timothy J TrullDepartment of Psychological Sciences, University of Missouri, Columbia, Missouri.
Richard A GruczaDepartment of Psychiatry, Washington University School of Medicine, St. Louis, Missouri.
Kathleen K BucholzDepartment of Psychiatry, Washington University School of Medicine, St. Louis, Missouri.
Karin J H VerweijDepartment of Biological Psychology, VU University Amsterdam, Amsterdam, The Netherlands.
Nicholas G MartinQIMR Berghofer Medical Research Institute, Herston, Queensland, Australia.
Dixie J StathamSchool of Social Sciences, University of the Sunshine Coast, Sippy Downs, Queensland, Australia.
Pamela A F MaddenDepartment of Psychiatry, Washington University School of Medicine, St. Louis, Missouri.
Andrew C HeathDepartment of Psychiatry, Washington University School of Medicine, St. Louis, Missouri.
Michael T LynskeyAddictions Department, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, United Kingdom.
Arpana AgrawalDepartment of Psychiatry, Washington University School of Medicine, St. Louis, Missouri.
Washington University in St. Louis · USKing's College London · GBQIMR Berghofer Medical Research Institute · AUUniversity of Missouri · USUniversity of the Sunshine Coast · AUVrije Universiteit Amsterdam · NL

Funding

PILOT--GENETIC EPIDEMIOLOGY OF ALCOHOL AND TOBACCO CONSUMPTION IN CHINESE SAMPLEP50AA011998 · NIAAA · WASHINGTON UNIVERSITY · PI HEATH, ANDREW C. · 1999 to 2008
$12.6M
CANNABIS AND TOBACCO INVOLVEMENT: A TWIN STUDYR01DA023668 · NIDA · WASHINGTON UNIVERSITY · PI AGRAWAL, ARPANA · 2007 to 2016
$2.5M
Cannabis and Other Illicit Drug Use: A Twin StudyR01DA018267 · NIDA · WASHINGTON UNIVERSITY · PI LYNSKEY, MICHAEL THOMAS · 2005 to 2009
$2.4M
Genetic Epideniologic Models of Alcohol AbuseR37AA007728 · NIAAA · WASHINGTON UNIVERSITY · PI HEATH, ANDREW C. · 1998 to 2007
$2.2M
CANNABIS, DEPRESSION AND SUICIDAL THOUGHTS AND BEHAVIORSR01DA040411 · NIDA · WASHINGTON UNIVERSITY · PI AGRAWAL, ARPANA, GRUCZA, RICHARD A · 2015 to 2017
$1.1M
POLICY AS ENVIRONMENT : LONG-TERM EFFECTS OF LAWS RESTRICTING YOUTH SUBSTANCE USER01DA031288 · NIDA · WASHINGTON UNIVERSITY · PI GRUCZA, RICHARD A · 2012 to 2015
$1.1M
DELINEATING THE ROLE OF GENETIC INFLUENCES ON CANNABIS INVOLVEMENTK02DA032573 · NIDA · WASHINGTON UNIVERSITY · PI AGRAWAL, ARPANA · 2012 to 2021
$1.1M
Ethanol and NOS2 Gene Expression in Human AstrocytesF32AA013221 · NIAAA · TEXAS TECH UNIVERSITY HEALTH SCIS CENTER · PI DAVIS, RANDALL L · 2002 to 2004
$120k
The Genetics of Co-occurring Alcohol Use and Self-HarmF32AA023693 · NIAAA · WASHINGTON UNIVERSITY · PI FEW, LAUREN RACHEL · 2014 to 2015
$97k
NATURAL HISTORY OF ALCOHOL USE &ABUSE--GENETIC MODELSR01AA007728 · NIAAA · WASHINGTON UNIVERSITY · PI HEATH, ANDREW C. · 1988 to 1998
–
NIAAA NIH HHS F32 AA013221NIAAA NIH HHS F32 AA023693NIAAA NIH HHS P50 AA011998NIAAA NIH HHS R01 AA007728NIAAA NIH HHS R37 AA007728NIDA NIH HHS K02 DA032573NIDA NIH HHS R01 DA018267NIDA NIH HHS R01 DA023668NIDA NIH HHS R01 DA031288NIDA NIH HHS R01 DA040411
6 · The paper itself

Abstract

objectiveCannabis use, particularly at an early age, has been linked to suicidal thoughts and behavior, but minimal work has examined the association between cannabis use and lifetime nonsuicidal self-injury (NSSI). The current study aims to characterize the overlap between lifetime and early cannabis use and NSSI and to examine genetic and environmental mechanisms of this association.

methodAdult male and female twins from the Australian Twin Registry (N = 9,583) were used to examine the odds of NSSI associated with lifetime cannabis use and early cannabis use (i.e., <17 years of age). These associations were also examined within monozygotic (MZ) twins discordant for cannabis use and MZ twins discordant for early cannabis use. Analyses were replicated in an independent sample of female twins (n = 3,787) accounting for the age at onset of cannabis use and NSSI.

resultsLifetime cannabis use (odds ratio [OR] = 2.84, 95% CI [2.23, 3.61]) and early cannabis use were associated with increased odds of NSSI (OR = 2.15, 95% CI [1.75, 2.65]), and this association remained when accounting for covariates. The association was only significant, however, in MZ twin pairs discordant for early cannabis use (OR = 3.20, 95% CI [1.17, 8.73]). Replication analyses accounting for the temporal ordering of cannabis use and NSSI yielded similar findings of nominal significance.

conclusionsResults suggest that NSSI is associated with cannabis involvement via differing mechanisms. For lifetime cannabis use, the lack of association in discordant pairs suggests the role of shared genes and family environment. However, in addition to such shared familial influences, person-specific and putatively causal factors contribute to the relationship between early cannabis use and NSSI. Therefore, delaying the onset of cannabis use may reduce exposure to influences that exacerbate vulnerabilities to NSSI.

Indexed as

Marijuana SmokingTwinsAdolescentAdultAge FactorsAustraliaChildFemaleHumansLongitudinal StudiesMaleMissouriOdds RatioRegistriesSelf-Injurious BehaviorSuicidal Ideation

Identifiers

PMID27797688
PMCPMC5088170
OpenAlexW2548302325

What OpenQuestion holds

Textmetadata
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.