By Age Group
Cancer deaths data are derived from the Ontario Cancer Registry (OCR) operated by Cancer Care Ontario. The OCR contains information on Ontario residents who have died of all types of malignant cancers. Cancer sites were coded using the Third Edition of the International Classification of Diseases for Oncology (ICDO-3).
This HealthSTATS page only includes deaths from malignant melanomas of the skin. Non-epithelial skin cancers, which are not included in these statistics, represent approximately 20% of skin cancer deaths that are tracked by the OCR. These statistics also do not include data for basal cell and squamous cell carcinomas, which are not tracked by the OCR. Exposure to ultraviolet (UV) rays is the most important risk factor for malignant melanomas. Sunlight is the main source of UV rays. Tanning beds and sun lamps are also sources of UV rays.
Over the nine years between 2004 and 2012, 195 Simcoe Muskoka residents died from malignant melanomas of the skin with an age-standardized mortality rate for all ages and both sexes of 3.2 (2.8, 3.7) per 100,000 population. This was significantly higher than the Ontario malignant melanoma mortality rate of 2.5 (2.4, 2.6) per 100,000.
Figure one below shows the trend in malignant melanoma mortality in both Simcoe Muskoka and Ontario over the twenty-seven year period from 1986 to 2012, grouped into three distinct time periods. The malignant melanoma mortality rates in Ontario did not change between 1995 and 2012; however these rates were significantly higher than the rates observed in Ontario from 1986 to 1994. In Simcoe Muskoka, malignant melanoma mortality has increase in each of these nine-year time periods; however, these increases are not statistically significantly due to the relative rarity of these types of cancer deaths. The Simcoe Muskoka rates have been consistently above the provincial rates over these time-periods and the difference between the local and provincial rates have been expanding over time.
Over the nine years between 2004 and 2012, the age-standardized mortality rate for malignant melanoma among Simcoe Muskoka males was 4.9 (4.1, 5.8) per 100,000, which was significantly higher than the female rate of 1.8 (1.3, 2.3) per 100,000. The age-standardized malignant melanoma mortality rates for Ontario males was significantly lower than what was observed for Simcoe Muskoka males; however the provincial females rate was not significantly different from the comparable Simcoe Muskoka rate.
Figure two shows the trend in malignant melanoma mortality rates for males and females in Simcoe Muskoka over the twenty-seven year period between 1986 and 2012, grouped into three distinct time periods. The malignant melanoma mortality rates for Simcoe Muskoka males were directionally higher when comparing the 2004-2012 rates to the 1986-1994 rates; however this difference was not statistically significant due to the relative rarity of these types of cancer deaths. The Simcoe Muskoka female malignant melanoma mortality rates remained relatively stable over these time-periods.
By Age Group
Malignant melanoma mortality increases significantly with age (see figure three). The age-specific malignant melanoma mortality rates between 2004 and 2012 (combined) in Simcoe Muskoka were highest among those 75 years and older at 26 (20.6, 32.4) deaths per 100,000 population, which was five times the rate among adults 45 to 64 years of age and double the rate for seniors between 65 and 74 years of age. The age-specific malignant melanoma mortality rate in Simcoe Muskoka were significantly higher than the comparable provincial rate among older seniors 75 years of age and older.