ArticleCMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne2019
Testing group differences for confounder selection in nonrandomized studies: flawed practice.
Article in CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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.
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.
Who cites it
13 citing papers in PubMed.
- Social Media Use Among People Living with Chronic Pain: Cross-Sectional Study of Associated Factors.Journal of medical Internet research · 2026Article
- Prevalence Of Food Insecurity And Associated Factors Among Adults Living With Chronic Pain In Quebec, Canada: A Cross-Sectional Study.Canadian journal of pain = Revue canadienne de la douleur · 2026Article
- Effectiveness of BHATIN (Behavior-Tailored Intervention) for Self-Care Management and Clinical Biomarkers Among Patients with Hypertension: A Quasi-Experimental Study [Letter].Journal of multidisciplinary healthcare · 2026Article
- Sex, gender, and sociodemographic factors associated with repeated prescription refills in chronic pain: insights from a prescription claims cohort study.Frontiers in pain research (Lausanne, Switzerland) · 2026Article
- A sex- and gender-based analysis plus of frequent healthcare utilization among individuals living with chronic pain: a cohort study.BMC health services research · 2025Article
- Unpacking excessive polypharmacy patterns among individuals living with chronic pain in Quebec: a longitudinal study.Frontiers in pain research (Lausanne, Switzerland) · 2025Article
- Pain relief and associated factors: a cross-sectional observational web-based study in a Quebec cohort of persons living with chronic pain.Frontiers in pain research (Lausanne, Switzerland) · 2024Article
- Perceived Risk of Medical Cannabis and Prescribed Cannabinoids for Chronic Pain: A Cross-Sectional Study Among Quebec Clinicians.Cannabis (Albuquerque, N.M.) · 2024Article
- Polypharmacy and Excessive Polypharmacy Among Persons Living with Chronic Pain: A Cross-Sectional Study on the Prevalence and Associated Factors.Journal of pain research · 2023Article
- Acceptability for COVID-19 vaccination: perspectives from Muslims.Human vaccines & immunotherapeutics · 2022Article
- Gender Differences in Medication Adverse Effects Experienced by People Living With Chronic Pain.Frontiers in pain research (Lausanne, Switzerland) · 2022Article
- Distinct care trajectories among persons living with arthritic conditions: A two-year state sequence analysis.Frontiers in pain research (Lausanne, Switzerland) · 2022Article
- Prevalence of cannabis use for pain management in Quebec: A post-legalization estimate among generations living with chronic pain.Canadian journal of pain = Revue canadienne de la douleur · 2022Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
PubMed holds no abstract for this paper.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
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.