Evidence map›Paper›PMID 33958383›Full record

ArticleCMAJ open

Patterns of cost-related medication underuse among Canadian adults with cancer: a cross-sectional study using survey data.

Omar Abdel-Rahman, Scott North

Open access · diamondAbstract read
In one paragraph

Article in CMAJ open. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
0.8field-weighted citation impact, top 29% 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

4 citing papers in PubMed, 4 citations in OpenAlex.

  1. Disparities in cost-related prescription nonadherence between Black and White adults in Canada.CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 2026
    Article
  2. Article
  3. Review
  4. 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

2 authors at 1 institution in 1 country.

Omar Abdel-RahmanDepartment of Oncology, University of Alberta and Cross Cancer Institute, Edmonton, Alta. omar.abdelsalam@ahs.ca.
Scott NorthDepartment of Oncology, University of Alberta and Cross Cancer Institute, Edmonton, Alta.
University of Alberta · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundCost-related medication underuse (CRMU) has been reported within the general population in Canada. In this study, we assessed patterns of CRMU among Canadian adults with cancer.

methodsThis is a cross-sectional study using survey data. We accessed data sets from the 2015/16 Canadian Community Health Survey (CCHS) and reviewed the records of adults (≥ 18 yr) with a history of cancer who were prescribed medication in the previous 12 months. We collected information about sociodemographic features, health behaviours and CRMU, and conducted a multivariable logistic regression analysis for factors associated with CRMU.

resultsA total of 8581 participants were eligible for the current study. In the weighted multivariable logistic regression analysis, the following factors were associated with CRMU: younger age (odds ratio [OR] 2.55, 95% confidence interval [CI] 1.79-3.63), female sex (male sex v. female sex OR 0.62, 95% CI 0.44-0.88), Indigenous racial background (Indigenous v. White OR 2.37, 95% CI 1.49- 3.77), unmarried status (OR 1.59, 95% CI 1.09-2.30), poor self-perceived health (excellent v. poor self-perceived health OR 0.36, 95% CI 0.17-0.77), lower annual income (< $20 000 v. income ≥ $80 000 OR 3.08, 95% CI 1.75-5.41) and lack of insurance for prescription medications (OR 2.49, 95% CI 1.77-3.50).

interpretationThe toll of CRMU among adults seems to be unequally carried by women, racial minorities, and younger (< 65 yr) and uninsured patients with cancer. Discussion about a national pharmacare program for people without private insurance is needed.

Indexed as

Drug MonitoringHealth Services MisuseMedication AdherenceNeoplasmsPrescription DrugsAdultCanadaCross-Sectional StudiesDemographyFemaleHealth BehaviorHumansMaleMiddle AgedNeeds AssessmentRisk FactorsPrescription Drugs

Identifiers

PMID33958383
PMCPMC8157980
OpenAlexW3158260224

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.