Clinical ResearchAssessing the Burden of Hospitalized and Community-Care Heart Failure in Canada
Section snippets
Study design
The feasibility of expanding the CCDSS to include HF surveillance was evaluated using aggregate-level data from 5 Canadian provinces: British Columbia (BC), Manitoba (MB), Ontario (ON), Quebec (QC), and Nova Scotia (NS). Using a standardized study protocol, case definitions—developed and validated by a PHAC-coordinated working group composed of clinicians, statisticians, epidemiologists, and methodologists—were used for common data linkage methods and variable definitions and were applied to
Results
The 5 provinces included in the study accounted for 82% of the Canadian population in 2008, which represented approximately 27 million persons. Provinces varied in size from 937,500 persons in NS to 12,932,500 persons in ON.
Discussion
This feasibility study demonstrated that using only hospitalization data with any diagnostic position provides prevalence and incidence estimates 39% and 33% lower than when physician billing claims are included to identify patients with HF. The degree of underestimation varied by province: from 33% in QC to 48% in BC for prevalence and from 25% in MB to 44% in BC for incidence. Furthermore, the underestimation varied by age, with the largest differences observed in older age groups. This may
Disclosures
The authors have no conflicts of interest to disclose.
For additional Authors' Information, Acknowledgements, and Funding Sources, please see the Supplementary Material.
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