Table 2.

Regression outputs—relationship between total population access to Level I or II trauma centers within 45 min by ground in 2010 and adult injury-related mortality in 2010

Model	Variable	Standardized coefficient	P-value	Confidence intervals	Adj. R-squared
Simple	Access to Level I or II Centers	−0.687	<0.001	−73.506 to −38.942	0.460
Bivariate with % African American (2010)10	Access to Level I or II Centers	−0.686	<0.001	−73.983 to −38.320	0.449
	% Af. Am.	0.004	0.967	−37.720 to 39.289
Bivariate with % ages 18–44 (2010)11	Access to Level I or II Centers	−0.617	<0.001	−68.377 to −32.665	0.489
	% Ages 18–44	−0.208	0.061	−386.315–8.985
Bivariate with % College-Education (2007)12	Access to Level I or II Centers	−0.299	0.011	−43.024 to −6.006	0.651
	% College-educated	−0.586	<0.001	−269.504 to −119.574
Bivariate with GDP (current dollar, 2012)13	Access to Level I or II Centers	−0.575	<0.001	−67.342 to −26.978	0.490
	GDP	−0.214	0.087	−10.991 to 0.772
Bivariate with % Non-White (2010)14	Access to Level I or II Centers	−0.663	<0.001	−72.897 to −35.733	0.453
	% Non-White	−0.067	0.557	−40.119 to 21.892
Bivariate with population density (2010)15	Access to Level I or II Centers	−0.605	<0.001	−69.107 to −30.036	0.471
	Population density	−0.168	0.162	−0.024 to 0.004
Bivariate with % uninsured (2012)16	Access to Level I or II Centers	−0.634	<0.001	−69.286 to −34.528	0.490
	% Uninsured	0.207	0.056	−2.082 to 153.604