ArticleInternational journal of chronic obstructive pulmonary disease
The Prevalence of Chronic Obstructive Pulmonary Disease (COPD) and the Heterogeneity of Risk Factors in the Canadian Population: Results from the Canadian Obstructive Lung Disease (COLD) Study.
Article in International journal of chronic obstructive pulmonary disease. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05623709 (Health Outcomes Following Treatment With Continuous Positive Airway Pressure or Noninvasive Ventilation in Patients With Chronic Obstructive Pulmonary Disease and a Sleep Related Breathing Disorder), which is not on this map. Cited by 23 papers, 2 of them syntheses that pooled it.
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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.
Health Outcomes Following Treatment With Continuous Positive Airway Pressure or Noninvasive Ventilation in Patients With Chronic Obstructive Pulmonary Disease and a Sleep Related Breathing Disorder
Who cites it
23 citing papers in PubMed, 2 syntheses or guidelines pooled it, 30 citations in OpenAlex.
- Estimating the global prevalence of chronic obstructive pulmonary disease (COPD): a systematic review and meta-analysis.BMC public health · 2024Pooled it
- Prevalence of chronic obstructive pulmonary disease and chronic bronchitis in eight countries: a systematic review and meta-analysis.Bulletin of the World Health Organization · 2022Pooled it
- 'The evidence is out there…': perspectives of healthcare providers on improving asthma and COPD prevention and care within a major health authority region of British Columbia, Canada.BMJ open quality · 2026Article
- Vapors, gases, dusts and fumes at work and chronic obstructive pulmonary disease/bronchitis: a systematic review and meta-analyses.Journal of occupational medicine and toxicology (London, England) · 2026Article
- User-Centered Design of an Electronic COPD Patient Questionnaire for Clinical Decision Support.International journal of chronic obstructive pulmonary disease · 2026Article
- Job Satisfaction of Registered Respiratory Therapists in Primary Care: Addressing Recruitment and Retention in Ontario and Manitoba.Behavioral sciences (Basel, Switzerland) · 2025Article
- Utility of diaphragm dome height as a marker of operational lung volume changes, disease burden and exacerbations in patients with mild-to-moderate COPD: an observational study within the CanCOLD cohort.ERJ open research · 2025Article
- COPD Exacerbations, Air Pollutant Fluctuations, and Individual-Level Factors in the Pandemic Era.International journal of chronic obstructive pulmonary disease · 2025Article
- Haemodynamic compensations for exercise tissue oxygenation in early stages of COPD: an integrated cardiorespiratory assessment study.BMJ open respiratory research · 2024Article
- Association of smoking cessation with airflow obstruction in workers with silicosis: A cohort study.PloS one · 2024Article
- A Multi-Specialty Delphi Consensus on Assessing and Managing Cardiopulmonary Risk in Patients with COPD.International journal of chronic obstructive pulmonary disease · 2024Article
- Prevalence of Chronic Obstructive Pulmonary Disease and Its Associated Risk Factors in Yunnan Province, China: A Population Based Cross-Sectional Study.International journal of chronic obstructive pulmonary disease · 2024Article
- Prevalence and Risk Factors of Chronic Obstructive Pulmonary Disease Among Users of Primary Health Care Facilities in Morocco.International journal of chronic obstructive pulmonary disease · 2024Observational
- Pharmacists' chronic disease management in chronic obstructive pulmonary disease: Effect on health services utilization.Journal of managed care & specialty pharmacy · 2023Article
- Early Origins of Chronic Obstructive Pulmonary Disease: Prenatal and Early Life Risk Factors.International journal of environmental research and public health · 2023Review
- Physical Activity and Symptom Burden in COPD: The Canadian Obstructive Lung Disease Study.Chronic obstructive pulmonary diseases (Miami, Fla.) · 2023Article
- Noninvasive Home Mechanical Ventilation for Stable Hypercapnic COPD: A Clinical Respiratory Review from Canadian Perspectives.Canadian respiratory journal · 2023Review
- Breathless and Blue in the Canadian Longitudinal Study on Aging: Incident and Recurrent Depression Among Older Adults with COPD During the COVID-19 Pandemic.International journal of chronic obstructive pulmonary disease · 2023Article
- Mendelian randomization study shows a causal effect of asthma on chronic obstructive pulmonary disease risk.PloS one · 2023Article
- Diagnosis and Management of Pulmonary NTM with a Focus onMicroorganisms · 2022Review
Corrections and comments
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Authors and funding
17 authors at 9 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeTo determine the spirometric-based prevalence of COPD across different regions in Canada and to evaluate the site heterogeneity of risk factors. PATIENTS AND
methodsIn this cross-sectional, population-based study, random samples of non-institutionalized adults aged ≥40 years were generated by random digit dialling. Participants answered an interviewer-administered questionnaire and performed spirometry before and after bronchodilator administration. COPD was defined as post-bronchodilator FEV
resultsOut of 5176 (95%) participants, 4893 (47% male with mean age 56.6 years (95% confidence interval, 56.0-57.2)) had spirometry that satisfied ATS criteria. The population prevalence of COPD was 16.2% (95% CI, 14.5-17.8) by FR and 11.2% (95% CI, 9.7-12.6) by LLN. Male predominance in prevalence was shown by FR but not by LLN criteria. Patient characteristics associated with an increased risk of COPD included: age (OR 1.56; 95% CI 1.33-1.84); history of physician-diagnosed asthma (OR 3.30; 95% CI 2.42-4.49); and childhood hospitalization for respiratory illness (OR 1.81; 95% CI 1.17-2.80). In terms of smoking-related risk factors, current smoking status had the highest odds ratio (OR 3.49; 95% CI 2.55-4.80). Variance in prevalence among sites was significantly reduced by adjusting for risk factors in Tau
conclusionThis study reports the population prevalence of COPD in nine urban cities which collectively represent the majority of the Canadian population and demonstrates that heterogeneity in prevalence among sites is substantially explained by variation in associated risk factors for COPD.
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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.