Table 6.

Patient Characteristics Across Borders (block groups)

Sample:	Census Block Groups within 1- mile of a Border		Census Block Groups within 2- miles of a Border		Census Block Groups within 5- miles of a Border
	Low Cost Side	High Cost Side	Low Cost Side	High Cost Side	Low Cost Side	High Cost Side
Mean Area log(Spending)	8.658	8.763**	8.657	8.757**	8.675	8.752**
Age	78.6	78.5	78.5	78.4	78.6	78.4*
Age < 65	0.060	0.064	0.062	0.066*	0.062	0.067**
Age >=65 & <70	0.116	0.117	0.118	0.120	0.117	0.120
Age >=70 & <75	0.144	0.144	0.145	0.145	0.142	0.144
Age >=75 & <80	0.186	0.189	0.187	0.188	0.185	0.187
Age >=80 & <90	0.372	0.364	0.370	0.359**	0.369	0.359**
Age >= 90	0.122	0.122	0.120	0.122	0.125	0.124
Share African American	0.063	0.108**	0.069	0.116**	0.081	0.119**
Share Asian	0.008	0.021**	0.011	0.018**	0.021	0.018
Share Hispanic	0.028	0.027	0.030	0.028	0.030	0.025*
Share Other Race	0.028	0.040	0.029	0.041*	0.025	0.037*
Share Nat. Amer	0.001	0.001	0.001	0.001	0.001	0.001
Share Male	0.383	0.385	0.385	0.384	0.383	0.382
Distance travelled	3.977	3.727	4.126	3.915	3.958	4.001
Predicted Mortality	0.235	0.237	0.236	0.237	0.236	0.237
Median Income	33293	32092	32061	30949	30680	29672
Share Owner Occ. Housing	0.866	0.861	0.864	0.871	0.856	0.879**
Share Urban	0.971	0.973	0.941	0.940	0.930	0.926
Number of Cross-border Pairs	336		482		583

Areas represented are distances from US Census Block Group centroids to an ambulance service-area boundary.

2000–2006 SPARCS Inpatient Data

^*significant at 5%;

^**significant at 1%