Evidence map›Paper›PMID 28944449›Full record

ArticleCancer2017

Cannabis use among patients at a comprehensive cancer center in a state with legalized medicinal and recreational use.

Steven A Pergam, Maresa C Woodfield, Christine M Lee, Guang-Shing Cheng, Kelsey K Baker, Sara R Marquis, Jesse R Fann

Abstract read
In one paragraph

Article in Cancer, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 141 papers, 7 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
141citing papers in PubMed, 7 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

141 citing papers in PubMed, 7 syntheses or guidelines pooled it.

  1. Cannabis use among cancer survivors: a systematic review and meta-analysis.Archives of public health = Archives belges de sante publique · 2026
    Pooled it
  2. Pooled it
  3. The impact of cannabis on immune checkpoint inhibitor therapy: a systematic review of immunomodulatory effects of cannabis in patients with and without cancer.Supportive care in cancer : official journal of the Multinational Association of Supportive Care in Cancer · 2025
    Pooled it
  4. Cannabis and Cannabinoids in Adults With Cancer: ASCO Guideline.Journal of clinical oncology : official journal of the American Society of Clinical Oncology · 2024
    Guideline
  5. Pooled it
  6. Pooled it
  7. Pooled it
  8. Trial
  9. Trial
  10. 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
  11. Article
  12. 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
  13. Article
  14. Article
  15. Article
  16. Review
  17. Characteristics of Cannabis Use Among Head and Neck Cancer Survivors.Laryngoscope investigative otolaryngology · 2025
    Article
  18. Article
  19. Article
  20. Article

81 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors.

Steven A PergamVaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington.ORCID http://orcid.org/0000-0002-6333-5196
Maresa C WoodfieldVaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington.
Christine M LeeDepartment of Psychiatry and Behavioral Sciences, University of Washington, Seattle, Washington.
Guang-Shing ChengClinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington.
Kelsey K BakerClinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington.
Sara R MarquisVaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington.
Jesse R FannClinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington.

Funding

Transform Dissemination and Implementation Science in CTSA ProgramsUL1TR002319 · NCATS · UNIVERSITY OF WASHINGTON · PI John K. Amory · 2017 to 2026
$100.0M
NCATS NIH HHS UL1 TR002319
6 · The paper itself

Abstract

backgroundCannabis is purported to alleviate symptoms related to cancer treatment, although the patterns of use among cancer patients are not well known. This study was designed to determine the prevalence and methods of use among cancer patients, the perceived benefits, and the sources of information in a state with legalized cannabis.

methodsA cross-sectional, anonymous survey of adult cancer patients was performed at a National Cancer Institute-designated cancer center in Washington State. Random urine samples for tetrahydrocannabinol provided survey validation.

resultsNine hundred twenty-six of 2737 eligible patients (34%) completed the survey, and the median age was 58 years (interquartile range [IQR], 46-66 years). Most had a strong interest in learning about cannabis during treatment (6 on a 1-10 scale; IQR, 3-10) and wanted information from cancer providers (677 of 911 [74%]). Previous use was common (607 of 926 [66%]); 24% (222 of 926) used cannabis in the last year, and 21% (192 of 926) used cannabis in the last month. Random urine samples found similar percentages of users who reported weekly use (27 of 193 [14%] vs 164 of 926 [18%]). Active users inhaled (153 of 220 [70%]) or consumed edibles (154 of 220 [70%]); 89 (40%) used both modalities. Cannabis was used primarily for physical (165 of 219 [75%]) and neuropsychiatric symptoms (139 of 219 [63%]). Legalization significantly increased the likelihood of use in more than half of the respondents.

conclusionsThis study of cancer patients in a state with legalized cannabis found high rates of active use across broad subgroups, and legalization was reported to be important in patients' decision to use. Cancer patients desire but are not receiving information about cannabis use during their treatment from oncology providers. Cancer 2017;123:4488-97. © 2017 The Authors. Cancer published by Wiley Periodicals, Inc. on behalf of American Cancer Society. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

Indexed as

CannabisPalliative CareRecreationAdultAgedCross-Sectional StudiesFemaleHumansMaleMedical MarijuanaMiddle AgedNeoplasmsSurveys and QuestionnairesWashingtonMedical Marijuanacancercannabismarijuanapainsupportive care

Identifiers

PMID28944449
PMCPMC5698756

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.