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COLON (excluding rectum)
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Incidence and Mortality Summary |
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| Male | Female | Total | |||
| Age-adjusted incidence rate per 100,000 # of new invasive cases # of new in-situ cases # of deaths |
28.9 187 14 80 |
24.6 199 9 93 |
26.5 |
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Total Cases by County |
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| Ada Adams Bannock Bear Lake Benewah Bingham Blaine Boise Bonner Bonneville Boundary Butte Camas Canyon Caribou |
93 2 20 1 4 10 3 1 12 15 5 3 1 42 2 |
Cassia Clark Clearwater Custer Elmore Franklin Fremont Gem Gooding Idaho Jefferson Jerome Kootenai Latah Lemhi |
7 0 5 2 3 1 1 10 4 7 6 5 36 1 7 |
Lewis Lincoln Madison Minidoka Nez Perce Oneida Owyhee Payette Power Shoshone Teton Twin Falls Valley Washington Unknown |
4 1 3 8 20 2 3 7 3 10 0 33 3 8 |
| Age | Rates increase with age; the vast majority of cases occur after age 50. |
| Gender | Incidence rates are slightly higher in males. |
| Genetics | Specific genetic alterations have been recognized in several hereditary conditions with high risk of colon cancer such as familial polyposis. These conditions account for about six percent of colon cancer cases. |
| Diet | Strong evidence that diets high in fat and low in fiber contribute to increased risk of colon cancer have been shown. |
| Other | Individuals with a close family history of this cancer and those with a personal history of certain other cancers are at increased risk. Regular, moderate physical activity is associated with lower rates of this cancer. |
| Mean age-adjusted incidence rate across
health districts: 95% confidence interval on the mean age-adjusted incidence rate: Median age-adjusted incidence rate of health districts: Range of age-adjusted incidence rate for health districts: SEER rate (1991-1995): |
25.5 22.2-28.9 23.9 18.1-30.6 31.5 |
No cases of colon cancer were diagnosed in persons less than
20 years of age. There was a steep increase in age-specific incidence rates
starting at age 55 and peaking in the age group 85+ for both males and females.
Health District 7 had significantly fewer cases than expected based upon rates
for the remainder of Idaho (p<0.05).
