A Novel Rural Classification System at the Small-Area (ZIP code) Level: Adapting the Index of Relative Rurality (IRR) to Estimate Degree of Rurality in Health Services Research

Sanae Inagami, MD MPH1, Shasha Gao, PhD2, Roslyn A. Stone, PhD3, Martine Shendge, MS2, Hassan Karimi, PhD1 and Janice C. Probst, PhD4
(1)University of Pittsburgh, Pittsburgh, PA, (2)VA Pittsburgh Healthcare System, Pittsburgh, PA, (3)University of Pittsburgh Graduate School, Pittsburgh, PA, (4)South Carolina Rural Health Research Center, Columbia, SC