U.S. Cancer Statistics American Indian and Alaska Native Incidence Data

Accurate determination of disease burden is a critical first step toward identifying health disparities. More American Indian and Alaska Native (AI/AN) patients are misclassified as another race in cancer registry records than patients in other racial groups. This misclassification can result in underestimates of cancer incidence among AI/ANs. Cancer incidence data from the central cancer registries have been linked with the Indian Health Service (IHS) patient registration database for improved accuracy of racial classification.

Another way to improve the precision of AI/AN cancer statistics is to restrict statistical analyses to areas with health care services provided by the IHS. IHS purchased/referred care delivery areas (PRCDAs) consist of counties that include all or part of an AI/AN reservation, as well as any county that has a common boundary with a reservation. Updates to the PRCDA list are published in the Federal Register.

The U.S. Cancer Statistics American Indian and Alaska Native Incidence Analytic Database is restricted to populations residing in PRCDA counties (defined in the October 19, 2017 Federal Register (82 FR 47004external icon)). The database includes incidence data from CDC’s National Program of Cancer Registries and the National Cancer Institute’s Surveillance, Epidemiology, and End Results Program.

States and Purchased/Referred Care Delivery Area Counties by IHS Region: United States
Map of the United States showing the states and Purchased/Referred Care Delivery Area (PRCDA) counties by IHS Region: United States. The IHS Regions are East, Northern Plains, Southern Plains, Southwest, Pacific Coast, Alaska, and Hawaii. States within the East IHS Region having PRCDA counties are Maine, Massachusetts, New York, Pennsylvania, Virginia, South Carolina, Florida, Alabama, Mississippi, and Louisiana. All states in the Northern Plains, except for Illinois, have PRCDA counties. All states on the Southern Plains, Southwest, and Pacific Coast IHS regions have PRCDA counties, as well as Alaska. Hawaii does not have PRCDA counties.

Map of the United States showing the states and Purchased/Referred Care Delivery Area (PRCDA) counties by IHS Region: United States. The IHS Regions are East, Northern Plains, Southern Plains, Southwest, Pacific Coast, Alaska, and Hawaii. States within the East IHS Region having PRCDA counties are Maine, Massachusetts, New York, Pennsylvania, Virginia, South Carolina, Florida, Alabama, Mississippi, and Louisiana. All states in the Northern Plains, except for Illinois, have PRCDA counties. All states on the Southern Plains, Southwest, and Pacific Coast IHS regions have PRCDA counties, as well as Alaska. Hawaii does not have PRCDA counties.

The U.S. Cancer Statistics AI/AN Incidence Analytic Database can be used to—

  • Describe the incidence of cancer.
  • Identify AI/AN populations most affected by cancer.
  • Evaluate cancer prevention and screening activities.
  • Assess cancer disparities.

You can use the AI/AN Incidence Analytic Database module in the U.S. Cancer Statistics Data Visualizations tool to explore the data. The module includes the latest and most complete AI/AN cancer data.

The AI/AN Incidence Analytic Database module provides interactive graphics and data interpretations—

  • For new cancer cases.
  • By IHS region.
  • By sex and age.
  • By type of cancer.