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Fisher JH, Kolb M, Algamdi M, Morisset J, Johannson KA, Shapera S, Wilcox P, To T, Sadatsafavi M, Manganas H, Khalil N, Hambly N, Halayko AJ, Gershon AS, Fell CD, Cox G, Ryerson CJ. Baseline characteristics and comorbidities in the CAnadian REgistry for Pulmonary Fibrosis. BMC Pulm Med 2019; 19:223. [PMID: 31771541 PMCID: PMC6880596 DOI: 10.1186/s12890-019-0986-4] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Accepted: 11/08/2019] [Indexed: 12/02/2022] Open
Abstract
Background The CAnadian REgistry for Pulmonary Fibrosis (CARE-PF) is a multi-center, prospective registry designed to study the natural history of fibrotic interstitial lung disease (ILD) in adults. The aim of this cross-sectional sub-study was to describe the baseline characteristics, risk factors, and comorbidities of patients enrolled in CARE-PF to date. Methods Patients completed study questionnaires and clinical measurements at enrollment and each follow-up visit. Environmental exposures were assessed by patient self-report and comorbidities by the Charlson Comorbidity Index (CCI). Baseline characteristics, exposures, and comorbidities were described for the overall study population and for incident cases, and were compared across ILD subtypes. Results The full cohort included 1285 patients with ILD (961 incident cases (74.8%)). Diagnoses included connective tissue disease-associated ILD (33.3%), idiopathic pulmonary fibrosis (IPF) (24.7%), unclassifiable ILD (22.3%), chronic hypersensitivity pneumonitis (HP) (7.5%), sarcoidosis (3.2%), non-IPF idiopathic interstitial pneumonias (3.0%, including idiopathic nonspecific interstitial pneumonia (NSIP) in 0.9%), and other ILDs (6.0%). Patient-reported exposures were most frequent amongst chronic HP, but common across all ILD subtypes. The CCI was ≤2 in 81% of patients, with a narrow distribution and range of values. Conclusions CTD-ILD, IPF, and unclassifiable ILD made up 80% of ILD diagnoses at ILD referral centers in Canada, while idiopathic NSIP was rare when adhering to recommended diagnostic criteria. CCI had a very narrow distribution across our cohort suggesting it may be a poor discriminator in assessing the impact of comorbidities on patients with ILD.
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Affiliation(s)
- J H Fisher
- Department of Medicine, University of Toronto, Toronto, Canada. .,University Health Network, 9N-945 585 University Avenue, Toronto, M5G 2N2, Canada.
| | - M Kolb
- Firestone Institute for Respiratory Health, Department of Medicine, McMaster University, Hamilton, Canada
| | - M Algamdi
- Department of Pulmonary and Critical Care Medicine, King Fahad Medical City, Riyadh, Saudi Arabia
| | - J Morisset
- Département de Médecine, Centre Hospitalier de l'Université de Montréal, Montreal, Canada
| | - K A Johannson
- Department of Medicine, University of Calgary, Calgary, Canada
| | - S Shapera
- Department of Medicine, University of Toronto, Toronto, Canada
| | - P Wilcox
- Department of Medicine, University of British Columbia, Vancouver, Canada.,Centre for Heart Lung Innovation, University of British Columbia, Vancouver, Canada
| | - T To
- Institute for Clinical Evaluative Sciences, Toronto, Canada.,Child Health Evaluative Sciences, The Hospital for Sick Children, Toronto, Canada.,Dalla Lana School of Public Health, University of Toronto, Toronto, Canada
| | - M Sadatsafavi
- Institute for Heart and Lung Health, Department of Medicine, University of British Columbia, Vancouver, Canada.,Faculty of Pharmaceutical Sciences, University of British Columbia, Vancouver, Canada
| | - H Manganas
- Département de Médecine, Centre Hospitalier de l'Université de Montréal, Montreal, Canada
| | - N Khalil
- Department of Medicine, University of British Columbia, Vancouver, Canada
| | - N Hambly
- Firestone Institute for Respiratory Health, Department of Medicine, McMaster University, Hamilton, Canada
| | - A J Halayko
- Department of Internal Medicine, University of Manitoba, Winnipeg, Canada
| | - A S Gershon
- Department of Medicine, University of Toronto, Toronto, Canada.,Institute for Clinical Evaluative Sciences, Toronto, Canada.,Child Health Evaluative Sciences, The Hospital for Sick Children, Toronto, Canada.,Dalla Lana School of Public Health, University of Toronto, Toronto, Canada
| | - C D Fell
- Department of Medicine, University of Calgary, Calgary, Canada
| | - G Cox
- Firestone Institute for Respiratory Health, Department of Medicine, McMaster University, Hamilton, Canada
| | - C J Ryerson
- Department of Medicine, University of British Columbia, Vancouver, Canada.,Centre for Heart Lung Innovation, University of British Columbia, Vancouver, Canada
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