Seasonal congestive heart failure mortality and hospitalisation trends, Quebec 1990–1998

Study objective: To describe seasonal congestive heart failure (CHF) mortality and hospitalisations in Quebec, Canada between 1990–1998 and compare trends in CHF mortality and morbidity with those in France. Design: Population cohort study. Setting: Province of Quebec, Canada. Patients: Mortality data were obtained from the Quebec Death Certificate Registry and hospitalisation from the Quebec Med-Echo hospital discharge database. Cases with primary ICD-9 code 428 were considered cases of CHF. Results: Monthly CHF mortality was higher in January, declined until September and then rose steadily (p Conclusion: CHF mortality in Quebec is highest during the winter and declines in the summer, similar to observations in France and Scotland. This suggests that absolute temperatures may not necessarily be that important but increased CHF mortality is observed once environmental temperatures fall below a certain “threshold” temperature. Alternatively better internal heating and warmer clothing required for survival in Quebec may ameliorate mortality patterns despite colder external environments

Cause of death · Cohort · Cohort study · Death certificate · Environmental health · Heart failure · Mortality rate · Population · Cardiovascular Health and Risk Factors · Climate Change and Health Impacts · Demography · Health Systems, Economic Evaluations, Quality of Life · Internal Medicine · Medicine

• Seasonal Variation in Leisure-time Physical Activity Among Canadians

  Open Access•Anwar T Merchant, Mahshid Dehghan et al.•Canadian Journal of Public Health•2007

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