Iowa's new cancer map zooms into ZIP codes
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As Iowa grapples with its growing cancer rates, a mapping tool by University of Iowa researchers is helping health officials and residents examine cancer at a hyper-local level.
Why it matters: Prior to the launch of the tool, rural counties and smaller towns struggled to obtain reliable data showing their area's unique disease trends, says Jacob Oleson, a University of Iowa biostatistician who has helped with the project over the last decade.
How it works: Cancer Analytics & Maps for Small Areas (CAMSA) provides estimated cancer incidence rates by ZIP code across Iowa.
- The tool uses Iowa Cancer Registry data and statistical modeling to smooth out random variation and provide more reliable data for small towns, says University of Iowa professor Caglar Koylu, who worked on the mapping.
- Users can filter by eight major cancers, including lung, breast and prostate, and view new or late-stage diagnoses from 2006–2020.
Zoom in: The ZIP code data helps separate trends in fast-growing suburbs from those in smaller communities.
- For example: When cancer rates were reported only by county, areas like West Des Moines could drive Dallas County's overall numbers, masking what's happening in smaller towns such as Adel.
- Now, ZIP code–level data breaks that down.
Between the lines: The tool doesn't explain why certain areas show higher cancer rates. Instead, it's meant to generate questions about possible environmental, behavioral and genetic factors, Oleson says.
The big picture: Researchers hope the CAMSA map becomes useful for other states.
- Both Kentucky and New Mexico have their own versions of the map.