Evidence map›Paper›PMID 34263391›Full record

ArticleCancer causes & control : CCC2021

Cannabis use is associated with patient and clinical factors in a population-based sample of colorectal cancer survivors.

P A Newcomb, M Ton, R C Malen, J L Heffner, J Labadie, A I Phipps, A N Burnett-Hartman

Erratum issuedAbstract read
In one paragraph

Article in Cancer causes & control : CCC, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing 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

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

  1. Pooled it
  2. Post-diagnosis cannabis use and its association with health status and quality of life in cancer survivors.Supportive care in cancer : official journal of the Multinational Association of Supportive Care in Cancer · 2026
    Article
  3. Perspectives on Cannabis Use among Cancer Survivors and Cancer Care Providers: Parallel Surveys.Journal of cancer education : the official journal of the American Association for Cancer Education · 2026
    Article
  4. Demographics, methods of use, and perceived benefits among patients with cancer who use cannabis.Supportive care in cancer : official journal of the Multinational Association of Supportive Care in Cancer · 2026
    Article
  5. Cannabis Use Among Adolescents and Young Adults with Cancer: A Scoping Review.Journal of cancer education : the official journal of the American Association for Cancer Education · 2025
    Review
  6. Article
  7. Article
  8. Article
  9. Current cannabis use and pain management among US cancer patients.Supportive care in cancer : official journal of the Multinational Association of Supportive Care in Cancer · 2024
    Article
  10. Article
  11. Article
  12. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors.

P A NewcombPublic Health Sciences Division, Fred Hutchinson Cancer Research Center, 1100 Fairview Avenue N, Seattle, WA, 98109, USA. newcomb@fredhutch.org.ORCID http://orcid.org/0000-0001-8786-0043
M TonPublic Health Sciences Division, Fred Hutchinson Cancer Research Center, 1100 Fairview Avenue N, Seattle, WA, 98109, USA.
R C MalenPublic Health Sciences Division, Fred Hutchinson Cancer Research Center, 1100 Fairview Avenue N, Seattle, WA, 98109, USA.
J L HeffnerPublic Health Sciences Division, Fred Hutchinson Cancer Research Center, 1100 Fairview Avenue N, Seattle, WA, 98109, USA.
J LabadiePublic Health Sciences Division, Fred Hutchinson Cancer Research Center, 1100 Fairview Avenue N, Seattle, WA, 98109, USA.
A I PhippsPublic Health Sciences Division, Fred Hutchinson Cancer Research Center, 1100 Fairview Avenue N, Seattle, WA, 98109, USA.
A N Burnett-HartmanPublic Health Sciences Division, Fred Hutchinson Cancer Research Center, 1100 Fairview Avenue N, Seattle, WA, 98109, USA.

Funding

Translational Bioimaging Core Shared ResourceP30CA015704 · NCI · FRED HUTCHINSON CANCER RESEARCH CENTER · PI Marian Esvelt · 1985 to 2026
$296.4M
Serrated Colorectal Cancer: An Emerging Disease Subtype (Admin Supplement)R01CA196337 · NCI · FRED HUTCHINSON CANCER RESEARCH CENTER · PI PHIPPS, AMANDA IRENE · 2015 to 2020
$3.7M
Contributing Factors and Consequences of Cancer Health DisparitiesT32CA094880 · NCI · UNIVERSITY OF WASHINGTON · PI Christopher I Li, AMANDA IRENE PHIPPS · 2017 to 2026
$3.7M
Training and Research in Colon Cancer SurvivalK05CA152715 · NCI · FRED HUTCHINSON CANCER RESEARCH CENTER · PI NEWCOMB, POLLY A · 2010 to 2019
$991k
NCI NIH HHS K05 CA152715NCI NIH HHS P30 CA015704NCI NIH HHS R01 CA196337NCI NIH HHS T32 CA094880
6 · The paper itself

Abstract

purposeThis study aimed to characterize patient and clinical factors associated with cannabis (marijuana) use among patients diagnosed with colorectal cancer (CRC).

methodsWe identified CRC patients, diagnosed from 2016 to 2018, using the Seattle-Puget Sound Surveillance, Epidemiology, and End Results (SEER) cancer registry. CRC patients were recruited via mail and telephone, and participants completed a questionnaire eliciting information on medical history, demographics, and lifestyle factors, including cannabis use. Cancer stage was obtained from SEER registry data.

resultsOf 1,433 survey respondents, 339 (24%) were current cannabis users. Current cannabis use was associated with younger age at diagnosis, lower BMI, and a higher prevalence of cigarette smoking and alcohol consumption (p-value < 0.05). Cannabis use was also associated with lower quality of life scores (FACT-C) and advanced-stage cancer (p-value < 0.05).

conclusionCannabis use among CRC patients was common. Patients with more advanced disease were more likely to report cannabis use. Use also varied by some personal factors, consistent with patterns in the general population. Given the high prevalence of cannabis use among CRC patients, research is needed to determine the benefits and harms of cannabis use for symptom management in cancer patients.

Indexed as

Cancer SurvivorsCannabisColorectal NeoplasmsHumansQuality of LifeSurvivorsCannabisColorectal cancerEpidemiologyMarijuanaSurvivorship

Identifiers

PMID34263391
PMCPMC8579831

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.