Volume 48 | Number 1 | February 2013

Abstract List

Michelle Ko M.D., Ph.D., Ninez A. Ponce Ph.D., M.P.P.


To examine associations between community residential segregation by income and race/ethnicity, and the supply of ederally ualified ealth enters (s) in urban areas.

Data Sources and Study Setting

Area esource ile (2000–2007) linked with 2000 . Census on . metropolitan counties ( = 1,786).

Study Design

We used logistic and negative binomial regression models with state‐level fixed effects to examine how county‐level characteristics in 2000 are associated with the presence of s in 2000, and with the increase in s from 2000 to 2007. Income and racial/ethnic residential segregation were measured by poverty and the non‐white dissimilarity indices, respectively. Covariates included measures of federal criteria for medically underserved areas/populations.

Principal Findings

Counties with a high non‐hite dissimilarity index and a high percentage of minorities were more likely to have an in 2000. When we examined the addition of new s from 2000 to 2007, the effects of both poverty and non‐hite dissimilarity indices were positive and significant.


Residential segregation likely produces geographic segregation of health services, such that provider maldistribution may explain the association between residential segregation and supply. Metropolitan areas that fail to achieve greater integration of poor and minority communities may require s to compensate for provider shortages.