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Counties with the highest brain cancer incidence rates in Washington

Among 25 Washington counties with published values, the counties with the highest brain cancer incidence rates are Walla Walla County, WA (9.1, 1.47 times the U.S. rate of 6.2), Skagit County, WA (8.7, 1.4 times the U.S. rate of 6.2) and Okanogan County, WA (8.6, 1.39 times the U.S. rate of 6.2). Values are per 100,000, age-adjusted. 1 of the 25 are significantly above the U.S. rate.

Source: NCI and CDC State Cancer Profiles, both sexes, all ages. These are county-level figures, age-adjusted as published by the source, compared with the U.S. rate. A high rate does not prove an environmental cause: age, smoking, income, access to care, screening and chance all move county rates, and small counties swing widely. Significant means the lower bound of the county’s 95 percent confidence interval is above the U.S. rate.

All Washington counties, highest first

Brain & nervous system cancer new cases, per 100,000, age-adjusted.

Counties with the highest brain cancer incidence rates in Washington
RankCountyStateValueU.S. rateTimes referenceSignificant
1Walla Walla CountyWA9.16.21.47xNo
2Skagit CountyWA8.76.21.4xSignificant
3Okanogan CountyWA8.66.21.39xNo
4Island CountyWA8.36.21.34xNo
5Clallam CountyWA8.26.21.32xNo
6Whatcom CountyWA7.46.21.19xNo
7Kittitas CountyWA7.36.21.18xNo
8Mason CountyWA7.36.21.18xNo
9Spokane CountyWA7.26.21.16xNo
10Stevens CountyWA7.26.21.16xNo
11Chelan CountyWA6.96.21.11xNo
12Snohomish CountyWA6.86.21.1xNo
13Yakima CountyWA6.86.21.1xNo
14Pierce CountyWA6.76.21.08xNo
15Clark CountyWA6.36.21.02xNo
16Cowlitz CountyWA6.36.21.02xNo
17King CountyWA6.36.21.02xNo
18Kitsap CountyWA6.26.21xNo
19Thurston CountyWA6.26.21xNo
20Benton CountyWA5.86.20.94xNo
21Grays Harbor CountyWA5.56.20.89xNo
22Grant CountyWA5.16.20.82xNo
23Jefferson CountyWA4.96.20.79xNo
24Lewis CountyWA4.96.20.79xNo
25Franklin CountyWA3.96.20.63xNo

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