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Cancer incidence among American Indian and Alaska Native populations, 2012–2016 (purchased/referred care delivery areas)
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    Purchased/Referred Care Delivery Areas (PRCDA) are counties that contain federally recognized tribal lands or are adjacent to tribal lands. Race classification for the American Indian/Alaska Native (AI/AN) population is more accurate in these counties. New cancer diagnoses (cancer incidence) data from the central cancer registries have been linked with the Indian Health Service (IHS) patient registration database to improve the accuracy of the category of race for AI/AN persons diagnosed with cancer. Data from earlier years showed geographic variation in incidence rates (counts of new cases divided by the population count) for the most common cancers (the cancers with highest numbers) among AI/AN populations. Rate ratios (the ratio of AI/AN cancer incidence rates to cancer incidence rates among non-Hispanic white populations, adjusted for differences in population age distributions) provide a relative measure of cancer burden. Large rate ratios indicate a disproportionate burden for that cancer among AI/AN populations.1 This data brief highlights the most common types of cancer among the AI/AN population and the cancers with the largest rate ratios (compared to white populations) in 6 geographic regions: Northern Plains, Alaska, Southern Plains, Pacific Coast, East, and Southwest. Suggested citation: Centers for Disease Control and Prevention. Cancer Incidence Among American Indian and Alaska Native Populations, 2012– 2016 (Purchased/Referred Care Delivery Areas). U.S. Cancer Statistics data brief, no 12. Atlanta, GA: Centers for Disease Control and Prevention, US Department of Health and Human Services; 2019. USCS-DataBrief-No12-October2019-h.pdf
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