Map of Simcoe Muskoka

Chronic Diseases

Ischemic Heart Disease (IHD) Hospitalization

Overall
By Sex
By Age Group
By Income

Overall

Ischaemic Heart Disease or IHD is characterized by a reduction in blood supplied to the heart caused by disease of the blood vessels supplying the heart muscle. The most common forms of IHD which result in hospitalizations are myocardial infarction (heart attack), atherosclerosis (hardening of the arteries) and angina pectoris (chest pain). Diseases of the circulatory system, including IHD, were the leading cause of hospitalizations in Simcoe Muskoka in 2020. IHD accounted for approximately one-third of all circulatory system disease related hospitalizations in 2020.

The age-standardized hospitalization rate for IHD in Simcoe Muskoka for all ages and sexes in 2020 was 266 (254.5, 278.6) hospitalizations per 100,000 population, which was significantly higher than the Ontario rate of 233 (231.3, 236.0) hospitalizations per 100,000 population. The standardized morbidity ratio (SMR) for IHD hospitalizations in Simcoe Muskoka compared with Ontario was 1.14 (1.1, 1.2), which means that there was a 14 per cent greater IHD hospitalization experience in Simcoe Muskoka relative to Ontario in 2020.

The IHD hospitalization rates dropped in 2020 by approximately 20% in Simcoe Muskoka and Ontario. It is unclear if this decrease was due to changes in health care use and access during the COVID-19 pandemic.

The IHD hospitalization rates in both Simcoe Muskoka and Ontario had been declining significantly from 2003 to 2019, with an average decrease in the rates of approximately five per cent per year; however, the pace of this decline has slowed since 2009. The rates in Simcoe Muskoka were significantly higher than the provincial rates each year over this 17-year period.

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By Sex

In 2020, the age-standardized IHD hospitalization rate among Simcoe Muskoka males was 385 (364.5, 406.8) hospitalizations per 100,000, which was more than twice the female rate of 156 (143.7, 168.9) hospitalizations per 100,000. The IHD hospitalization rates for Ontario were significantly lower than the Simcoe Muskoka rates for both males and females in 2020.

The 2020 IHD hospitalization rates dropped by about 20% among Simcoe Muskoka males and females. From 2003 to 2019, the IHD hospitalization rates for males and females in Simcoe Muskoka decreased significantly with the males rates being significantly and substantially higher than the females rates over the entire period.

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By Age Group

Hospitalizations for IHD increase significantly with age. The age-specific rate for IHD hospitalizations between 2016 and 2020 (combined) in Simcoe Muskoka was highest among those 75 years and older at 1609 (1558, 1661) hospital discharges per 100,000 population (75+). The age-specific IHD Hospitalization rates in Simcoe Muskoka were significantly higher than their respective provincial rates for all age groups among adults 20 years of age and older.

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By Income

For the period from 2016 to 2020 (combined), Simcoe Muskoka residents living in areas with the highest amount of material deprivation (as measured by the 2016 Ontario Marginalization Index) had significantly higher rates of IHD hospitalizations when compared with those living in areas with the least amount of material deprivation.

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Page last updated June 9, 2022