Individual and Neighborhood Socioeconomic Status and Healthcare Resources in Relation to Black-White Breast Cancer Survival Disparities

Table 1

Descriptive statistics of healthcare access and socio-economic characteristics of 3141 US counties in 2000-2001, Area Resource File 2009-2010.

Variable	All US counties (𝑛=3141)				Analysis counties (𝑛=60)
	Mean	Std Dev	Min	Max	Mean	Std Dev	Min	Max
County level health care access
^aPersonnel	−2.058𝐸−16	1.000	−1.519	13.777	0.814	0.866	−0.819	3.054
^aFacilities	−1.968𝐸−16	1.000	−2.565	10.801	−0.482	0.316	−1.014	0.605
County level income and education
^bIndex of concentration at the extremes (Income)	−0.009	0.076	−0.429	0.358	0.067	0.098	−0.168	0.359
^bIndex of concentration at the extremes (Education)	0.074	0.114	−0.394	0.619	0.160	0.122	−0.137	0.390
County level controls
% Non-English speaking	1.631	2.610	0	28.715	4.970	4.405	0	15.889
% Black	8.763	14.512	0	86.500	16.06	15.49	0.300	67.300

^aPersonnel and facilities, two measures of health care access were defined using principal components analysis on the count per 10,000 population of county level variables. Facilities: hospitals, mammography facilities; Personnel: MDs, Dos, and nurse practitioners.
^bMeasures of SES at the county level are the ICE-Income and ICE-Education variables, defined as
ICE-Education = (% 25⁺ years with college degree−% 25⁺ years with <9 yrs education).
ICE-Income = (% with HH income > $100,000−% HH in poverty).