Recent Trends in Hospitalizations for Cardiovascular Disease, Stroke, and Vascular Cognitive Impairment in Canada

We analyzed hospitalization rates for a broad set of cardiovascular diseases, stroke, and vascular cognitive impairment (VCI) between 2007 and 2016 in Canada to characterize population-level trends and demographic and provincial/territorial variation in inpatient health care utilization.

Record-level administrative hospitalization data from April 1, 2007 to March 31, 2017 for individuals aged 0-105 years were obtained from the Canadian Institute for Health Information Discharge Abstract Database. Data were available for all provinces and territories, except Quebec. Using the International Classification of Diseases (10th Revision, Canada) diagnostic coding standards, we identified disease categories related to cardiovascular disease, stroke, or VCI. Hospitalizations, crude and standardized, for age and sex (direct method) were calculated using the 2011 Census as the standard population.

Between 2007 and 2016, percent decreases in standardized hospitalization rates were relatively small for heart failure and stroke (-2.4% and -4.7%, respectively), whereas those for coronary artery and vascular disease and heart rhythm disorders were moderate (-27.4% and -16.8%, respectively). Percent increases were relatively small for congenital heart disease (+7.2%) and moderate for acquired valvular heart disease (+31.1%) and VCI (+23.4%). There were notable age- and sex-specific differences along with provincial/territorial variation.

Between 2007 and 2016, there was an overall decrease in standardized hospitalization rates for coronary artery and vascular disease, heart failure, heart rhythm disorders, and stroke, and an increase in hospitalization rates for structural heart disease (congenital heart disease and acquired valvular heart disease) and VCI in Canada.