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BREAST (female)
Incidence and Mortality Summary |
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| Male | Female | ||||
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Age-adjusted incidence rate per 100,000 # of new invasive cases # of new in-situ cases # of deaths |
- - - - |
103.7 678 104 158 |
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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 |
188 1 37 1 5 19 14 3 23 62 6 2 0 74 1 |
Cassia Clark Clearwater Custer Elmore Franklin Fremont Gem Gooding Idaho Jefferson Jerome Kootenai Latah Lemhi |
8 1 4 4 12 0 8 21 11 11 11 13 90 17 5 |
Lewis Lincoln Madison Minidoka Nez Perce Oneida Owyhee Payette Power Shoshone Teton Twin Falls Valley Washington Unknown |
2 3 4 5 40 1 2 14 3 10 3 31 6 6 0 |
| Age | Rates increase steadily with age. Age is the single most important risk factor for breast cancer. A 60-year old white American woman's risk of developing breast cancer is fourteen times that of a 30-year old American woman. |
| Race & SES* | Caucasians have higher incidence rates as do women in higher income groups. |
| Genetics | Specific genes associated with breast cancers have been identified and are being studied. |
| Hormonal | There is evidence of hormonal influence in the risk of developing breast cancer. Longer intervals of menarche to the first full-term pregnancy and menarche to menopause, as well as menarche before age 13, have been associated with higher risks of breast cancer. |
| Other | High dietary fat intake, obesity, sedentary life-style, and having a mother or sister with breast cancer have all been implicated as associated risk factors. |
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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: |
101.8 88.2 - 115.4 107.3 73.4 - 118.8 |
The rates of breast cancer in Idaho in 1995 increased gradually with age from age 20 upwards. No cases were diagnosed in women less than 20 years old. The highest breast cancer rates were observed in the 70-79 age group.
* Socio-economic Status