Evidence map›Paper›PMID 32133273›Full record

ArticleCurrent addiction reports2019

Measuring Within-Individual Cannabis Reduction in Clinical Trials: A Review of the Methodological Challenges.

Rachel L Tomko, Kevin M Gray, Marilyn A Huestis, Lindsay M Squeglia, Nathaniel L Baker, Erin A McClure

Abstract read
In one paragraph

Article in Current addiction reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 2 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

13 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Characterizing cannabis use reduction and change in functioning during treatment: Initial steps on the path to new clinical endpoints.Psychology of addictive behaviors : journal of the Society of Psychologists in Addictive Behaviors · 2022
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  7. Review
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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

6 authors.

Rachel L TomkoDepartment of Psychiatry and Behavioral Sciences, Medical university of South Carolina.
Kevin M GrayDepartment of Psychiatry and Behavioral Sciences, Medical university of South Carolina.
Marilyn A HuestisInstitute of Emerging Health Professions, Thomas Jefferson University.
Lindsay M SquegliaDepartment of Psychiatry and Behavioral Sciences, Medical university of South Carolina.
Nathaniel L BakerDepartment of Public Health Sciences, Medical University of South Carolina.
Erin A McClureDepartment of Psychiatry and Behavioral Sciences, Medical university of South Carolina.

Funding

DRUG ABUSE TRAINING PROGRAMT32DA007288 · NIDA · MEDICAL UNIVERSITY OF SOUTH CAROLINA · PI Christopher W Cowan, Rachel Penrod-Martin · 1991 to 2026
$11.8M
Interdisciplinary Women's Health Research at MUSCK12HD055885 · NICHD · MEDICAL UNIVERSITY OF SOUTH CAROLINA · PI MCGINTY, JACQUELINE F. · 2007 to 2021
$7.2M
N-Acetylcysteine and Contingency Management for Youth Cannabis Use DisorderR01DA042114 · NIDA · MEDICAL UNIVERSITY OF SOUTH CAROLINA · PI GRAY, KEVIN M · 2017 to 2021
$3.1M
Neuroscience-informed Treatment Development for Adolescent Alcohol Use DisordersK23AA025399 · NIAAA · MEDICAL UNIVERSITY OF SOUTH CAROLINA · PI SQUEGLIA, LINDSAY · 2016 to 2020
$1.0M
NIAAA NIH HHS K23 AA025399NICHD NIH HHS K12 HD055885NIDA NIH HHS R01 DA042114NIDA NIH HHS T32 DA007288
6 · The paper itself

Abstract

purposeCannabis abstinence traditionally is the primary outcome in cannabis use disorder (CUD) treatment trials. Due to the changing legality of cannabis, patient goals, and preliminary evidence that suggests individuals who reduce their cannabis use may show functional improvements, cannabis reduction is a desirable alternative outcome in CUD trials. We review challenges in measuring cannabis reduction and the evidence to support various definitions of reduction.

findingsReduction in number of cannabis use days was associated with improvements in functioning across several studies. Reductions in quantity of cannabis used was inconsistently associated with improvements in functioning, though definitions of quantity varied across studies. Different biomarkers may be used depending on the reduction outcome.

conclusionsBiologically-confirmed reductions in frequency of cannabis use days may represent a viable endpoint in clinical trials for cannabis use disorder. Additional research is needed to better quantify reduction in cannabis amounts.

Indexed as

biomarkerscannabis quantificationcannabis use disorderharm reductionrandomized controlled trialΔ9-tetrahydrocannabinol

Identifiers

PMID32133273
PMCPMC7055684

What Socratic 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 Socratic graph.