Data Source: Indian Health Service (IHS)
IHS National Data Warehouse (NDW)
U.S. Department of Health and Human Services,
Indian Health Service (IHS).
The NDW is the national repository for all IHS
health care data and includes information on patient registration and visit
encounters. Data are derived from various government (mostly the Resource
Patient Management System or "RPMS") and commercial health care information
systems. These are largely transaction-based systems used to support patient
care. The NDW is an upgraded version of the National Patient Information
Reporting System (NPIRS).
Registration records and all encounter
records (dated October 1, 2000, to the present) are included in the NDW. Registration
tables contain patient information, including name, demographic data, medical
chart data, aliases, and insurance eligibility data. Encounter tables contain
encounter information, including location of treatment, clinic, provider,
medications, and diagnosis codes.
NPIRS collects data on approximately 1.5 million
American Indians and Alaska Natives who belong to 565 federally recognized
tribes in 35 States.
Age, gender, and American Indian and Alaska Native
1997 to present.
National IHS service area estimates are available
for the following IHS regions: Aberdeen, Alaska, Albuquerque, Bemidji,
Billings, Nashville, Navajo, Oklahoma, Phoenix, and Tucson (excluding the
Portland and California service areas).
Since no IHS inpatient facilities are located in
either the Portland or California service areas, hospitalizations from these
regions are not present in the data; the denominator is correspondingly
Agency home page: http://www.ihs.gov.
Data system home page: http://www.ihs.gov/NDW/.
Berger L, Garrett Sims LTJ. Identifying
Polypharmacy among older adults using IHS National Data Warehouse data.
IHS Prim Care Provid 2010 Oct;35(10).
Return to Contents
Proceed to Next Section