1998 Report Index

BLADDER

Incidence and Mortality Summary
Male Female Total
Age-adjusted incidence
rate per 100,000

# of new invasive cases
# of new in-situ cases
# of deaths

28.7

86
95
41

7.7

30
31
14


17.2

116
126
55


Total Cases by County
Ada
Adams
Bannock
Bear Lake
Benewah
Bingham
Blaine
Boise
Bonner
Bonneville
Boundary
Butte
Camas
Canyon
Caribou
52
1
9
0
5
6
3
3
9
9
3
0
0
20
2
Cassia
Clark
Clearwater
Custer
Elmore
Franklin
Fremont
Gem
Gooding
Idaho
Jefferson
Jerome
Kootenai
Latah
Lemhi
5
0
1
2
5
0
1
4
3
6
1
4
19
10
1
Lewis
Lincoln
Madison
Minidoka
Nez Perce
Oneida
Owyhee
Payette
Power
Shoshone
Teton
Twin Falls
Valley
Washington
Unknown
3
0
1
9
11
0
2
2
0
7
1
19
1
2


Risk and Associated Factors
Age Rates usually increase steadily with age.
Gender Males have substantially higher rates than females.
Race Incidence rates are slightly higher in African Americans.
Occupation Occupational exposures, most prominently aniline dye used in textile, rubber, and cable industries, are associated with a large proportion of cases.
Other Tobacco consumption has been associated with a six-fold higher incidence of bladder tumor. Beta-naphthylamine, 4-amino-diphenyl, and tobacco tar have also been implicated in animal studies as possible causative factors. Chronic infections, calculus disease, and Schistosoma hematobium may also cause bladder tumor.

Special Notes
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):

16.9
12.8-21.0
7.0
9.9-23.2
18.1

There were few cases of bladder cancer among persons aged less than 40 years. Bladder cancer incidence rates increased with age, peaking in the age group 85+ for males, and 75-79 for females. Health Districts 6 and 7 had significantly fewer cases than expected based upon rates for the remainder of Idaho (p<0.05).



Stage at Diagnosis