Bladder cancer is growth of abnormal cells in the bladder, the organ that stores urine before it leaves the body. Smoking is the greatest risk factor associated with bladder cancer. The relationship between bladder cancer and drinking water contamination has also been researched extensively. High levels of arsenic in drinking water is well-established as a cause of cancer. Read more about bladder cancer.

Measures are presented as either annual data at the state level or as five year aggregate data at the county level.

As part of the February 2023 update the Cancer Data source was updated to come directly from the State Health Registry of Iowa, Iowa Cancer Registry. The new data source allows data to be published with a shorter delay from the prior National SEER Data source. Due to this change the measures published for 2000-2016 may be slightly different than previously available.

Annual Bladder Cancer Incidence Data

Annual cancer incidence measures can be used to identify trends and patterns of cancer incidence over time. Annual measures are only available at the state level. County level cancer incidence measures are available as five year aggregate data.

Measure Description:

  • The Cancer Count is the number of newly diagnosed malignant and in-situ cancers.
  • The Crude Rate (Per 100K) is the rate of newly diagnosed malignant and in-situ cancers per 100,000 population
  • The Age Adjusted Rate (Per 100K) is the age adjusted rate of newly diagnosed malignant and in-situ cancers per 100,000 population. Age adjustment to the 2000 Standard US Census is done to allow direct comparison of rates in counties and state with different population age distributions.

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5-Year Bladder Cancer Incidence Data

Five Year incidence measures can be used to identify trends and patterns of cancer incidence over time and in different geographic areas. Five year aggregate measures are available at the state and county level. Five year aggregate data is used to reduce the presence of suppressed values due to small numbers; allowing display of data, and stabilization of rates to better evaluate trends. Even with this aggregation some values still need to be suppressed.

Measure Description:

  • The Average Annual Count is the average number of newly diagnosed malignant and in-situ cancers per year in the five year period.
  • The Crude Rate (Per 100K) is the rate of newly diagnosed malignant and in-situ cancers per 100,000 Population during the five year period.
  • The Age Adjusted Rate (Per 100K) is the age adjusted rate of newly diagnosed malignant and in-situ cancers per 100,000 Population during the five year period. Age adjustment to the 2000 Standard US Census is done to allow direct comparison of rates in counties and state with different population age distributions.

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