The tribal list frame provided by IHS consisted of 385 records. This file also contained a code for the approximate size of Indian population, excluding urban Indian health agencies and a few other organizations. This classification system divided tribes into small (< 2,500 Indian population), medium (2,500 – 10,000), and large (> 10,000). The 50 tribal health agencies with unknown population size were placed into a fourth category for stratification. To achieve a representative mix of tribes, we sorted the file on this size code, as well as by Census region and state.
"HUS-HP Users Assessment 9-29-05 (3).pdf" (pdf, 731.33Kb)