Overall
By Sex
By Age Group
Cancer incidence data are derived from the Ontario Cancer Registry (OCR) operated by Cancer Care Ontario. The OCR contains information on Ontario residents who have been newly diagnosed with all types of malignant cancers, with the exception of basal cell and squamous cell (non-melanoma) skin cancers. Cancer sites were coded using the Third Edition of the International Classification of Diseases for Oncology (ICDO-3). Beginning in 2014, the OCR adopted the National Cancer Institute (NCI) SEER standards for counting multiple primaries for cancer cases diagnosed in 2010 and beyond. This standard is more liberal than the previously used case counting rules from the modified version of the International Association of Cancer Registries (IACR). Cancer incidence data presented on this and other HealthSTATS pages reflect the new rules for counting multiple primary cancers. To ensure consistent interpretation of trends, cancer incidence data will only be presented from 2010 onward on all HealthSTATS pages.
Overall
The rate of new cancer cases (also called the incidence rate) provides a measure of the risk of developing cancer over a given period of time. In 2018 among Simcoe Muskoka residents, there were over 400 new cases of colorectal cancer diagnosed for an age-standardized incidence rate of 59 (53.2, 64.9) new cases per 100,000 population. This was not significantly different from the Ontario colorectal cancer incidence rate of 56 (54.5, 56.9) new cases per 100,000.
The colorectal cancer incidence rates both in Simcoe Muskoka and Ontario decreased at a small but significant pace from 2010 to 2018, with an annual percentage decrease of approximately two per cent per year.
By Sex
In 2018, the age-standardized incidence rate for colorectal cancer among Simcoe Muskoka males was 69 (60.2, 78.9) new cases per 100,000, which was significantly higher than the female rate of 50 (43.2, 58.5) new cases per 100,000. The 2018 age-standardized colorectal cancer incidence rates for Ontario males and females were not significantly different from the comparable Simcoe Muskoka rates.
The colorectal cancer incidence rates for both males and females in Simcoe Muskoka decreased at a small but significant pace from 2010 to 2018, with an annual percentage decrease of approximately three per cent per year for females and approximately two per cent per year for males. The colorectal cancer incidence rates among Simcoe Muskoka males have been above the comparable female rates over this near-year period.
By Age Group
The risk of being diagnosed with colorectal cancer increases significantly with age. The age-specific colorectal cancer incidence rates between 2010 and 2018 (combined) in Simcoe Muskoka were highest among those 75 years and older at 382 (361.9, 402.2) new cases per 100,000 population. The age-specific colorectal cancer incidence rates in Simcoe Muskoka were significantly higher than the comparable provincial rates for seniors 75 years of age and older.
