Evidence map›Paper›PMID 24720376›Full record

Trial reportThe American journal of drug and alcohol abuse2014

Cigarette smoking during an N-acetylcysteine-assisted cannabis cessation trial in adolescents.

Erin A McClure, Nathaniel L Baker, Kevin M Gray

Abstract readRandomized Controlled Trial
In one paragraph

Trial report in The American journal of drug and alcohol abuse, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 2 pooled it
2.9field-weighted citation impact, top 11% 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

20 citing papers in PubMed, 2 syntheses or guidelines pooled it, 31 citations in OpenAlex.

  1. Pharmacotherapies for cannabis use disorder.The Cochrane database of systematic reviews · 2025
    Pooled it
  2. Pharmacotherapies for cannabis dependence.The Cochrane database of systematic reviews · 2019
    Pooled it
  3. Trial
  4. Trial
  5. Trial
  6. Trial
  7. Trial
  8. Article
  9. Article
  10. Article
  11. Review
  12. Effectiveness of N-acetylcysteine in Treating Clinical Symptoms of Substance Abuse and Dependence: A Meta-analysis of Randomized Controlled Trials.Clinical psychopharmacology and neuroscience : the official scientific journal of the Korean College of Neuropsychopharmacology · 2021
    Article
  13. Article
  14. Article
  15. Article
  16. Current psychiatry · 2018
    Article
  17. Article
  18. Review
  19. Article
  20. 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

3 authors at 1 institution in 1 country.

Erin A McClureDepartments of Psychiatry and Behavioral Sciences and.
Nathaniel L Baker
Kevin M Gray
Medical University of South Carolina · US

Funding

Southern Consortium Node of the Clinical Trials NetworkU10DA013727 · NIDA · MEDICAL UNIVERSITY OF SOUTH CAROLINA · PI BRADY, KATHLEEN T. · 2000 to 2015
$34.4M
South Carolina Clinical & Translational Research Institute (SCTR)UL1TR000062 · NCATS · MEDICAL UNIVERSITY OF SOUTH CAROLINA · PI BRADY, KATHLEEN T. · 2012 to 2014
$9.4M
A Randomized Controlled Trial of Varenicline for Adolescent Smoking CessationU01DA031779 · NIDA · MEDICAL UNIVERSITY OF SOUTH CAROLINA · PI GRAY, KEVIN M · 2012 to 2016
$3.3M
A Controlled Trial of N-Acetylcysteine (NAC) in Cannabis Dependent AdolescentsR01DA026777 · NIDA · MEDICAL UNIVERSITY OF SOUTH CAROLINA · PI GRAY, KEVIN M · 2009 to 2010
$722k
NCATS NIH HHS UL1 TR000062NCATS NIH HHS UL1TR000062NIDA NIH HHS R01 DA026777NIDA NIH HHS R01DA026777NIDA NIH HHS U01 DA031779NIDA NIH HHS U01DA031779NIDA NIH HHS U10 DA013727NIDA NIH HHS U10DA013727
6 · The paper itself

Abstract

BACKGROUND AND

objectivesTobacco and cannabis use are both highly prevalent worldwide. Their co-use is also common in adults and adolescents. Despite this frequent co-occurrence, cessation from both substances is rarely addressed in randomized clinical trials. Given evidence that tobacco use may increase during cannabis cessation attempts, and additionally that tobacco users have poorer cannabis cessation outcomes, we explored tobacco outcomes, specifically cigarette smoking, from an adolescent cannabis cessation trial that tested the efficacy of N-acetylesteine (NAC).

methodsCannabis-dependent adolescents (ages 15-21; n = 116) interested in cannabis treatment were randomized to NAC (1200 mg bid) or matched placebo for 8 weeks. Participants did not need to be cigarette smokers or be interested in smoking cessation to qualify for inclusion.

resultsApproximately 59% of enrolled participants were daily and non-daily cigarette smokers, and only differed from non-smoking participants on the compulsion sub-scale of the Marijuana Craving Questionnaire. Among cigarette smokers who were retained in the study, there was no change in cigarettes per day for either NAC or placebo groups during the eight-week treatment phase. Being a cigarette smoker did not appear to influence the effects of NAC on cannabis abstinence, though there was a trend in the placebo group of poorer cannabis outcomes for cigarette smokers vs. non-smokers.

conclusionsNo evidence was found of compensatory cigarette smoking during this cannabis cessation trial in adolescents. Further work assessing interventions to reduce both cannabis and tobacco use in this population is greatly needed.

Indexed as

SmokingAcetylcysteineAdolescentFemaleHumansMaleMarijuana AbuseMarijuana SmokingSurveys and QuestionnairesTreatment OutcomeYoung AdultAcetylcysteineadolescentscannabiscessationcigarettemarijuanaN-acetylcysteinesmokingtobacco

Identifiers

PMID24720376
PMCPMC4118750
OpenAlexW2056907486

What OpenQuestion holds

Textmetadata
LicenceTDM
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.