What are the estimates of the number of people who use IHS services (user population)?
IHS has the ability to collect data on user population from both IHS and Tribal facilities. Urban user population is reported to us from separate mechanisms, but is obtained as best possible. The tribal input (by roughly 68% of the tribes) accounts for roughly 85% of the tribal user population. The total reported for 2005 from all I/T/U facilities was roughly 1.5 million people.
