By Age Group
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 two most common fatal forms of IHD are myocardial infarction (heart attack) and atherosclerosis (hardening of the arteries). IHD was the leading cause of death in Simcoe Muskoka between 2007 and 2012 and was listed as the primary cause for more than 3,700 deaths, which accounted for 16 per cent of all deaths during that six-year period.
The age-standardized mortality rate for IHD in Simcoe Muskoka for all ages and sexes in 2012 was 105.2 (96.9, 113.6) per 100,000 population, which was not significantly different from the Ontario rate of 96.4 (94.9, 98.0) per 100,000 population.
The IHD mortality rates in both Simcoe Muskoka and Ontario declined significantly over the thirteen years from 2000 to 2012, with an average annual decrease of approximately five per cent per year. There was a small but significant increase in the IHD mortality experience in Simcoe Muskoka relative to Ontario during the twelve years between 2000 and 2011. The standardized mortality ratio (SMR) for IHD mortality was 1.05 (1.03, 1.08), which means that there was a five per cent higher IHD mortality experience in Simcoe Muskoka when compared with the province as a whole from 2000 to 2011.
In 2012, the age-standardized mortality rate for IHD among Simcoe Muskoka males was 141.1 (126.0, 156.2) per 100,000, which was approximately twice the female rate of 75.9 (66.6, 85.1) per 100,000. The 2012 age-standardized IHD mortality rates for Ontario males and females were not significantly different from the comparable Simcoe Muskoka rates.
The IHD mortality rates decreased significantly for both Simcoe Muskoka males and females from 2000 to 2012. The IHD mortality rates among males have been substantially higher than the female rates over this entire 13-year time period.
By Age Group
The risk of dying from IHD increases exponentially with age. The age-specific rate of IHD deaths between 2000 and 2012 (combined) in Simcoe Muskoka was highest among those 75 years and older at 1360 (1324.6,1395.6) deaths per 100,000. This was more than four times the rate for those 65 to 74 years of age and more than 20 times the rate for those 45 to 64 years of age. The age-specific Simcoe Muskoka rates were marginally, but significantly, higher than the provincial rates for all age-groups among adults 45 years of age and older.
The risk of dying from IHD is significantly higher among those that live in bottom income quintile when compared with those living in any of the other income quintiles. The age-standardized mortality rate for IHD deaths between 2006 and 2012 (combined) in Simcoe Muskoka was highest among those living in the bottom income quintile at 142.2 (133.6, 150.8) deaths per 100,000 and lowest at 91.0 (84.7, 97.4) deaths per 100,000 observed among those that live in the top income quintile.