Table 3.

Cohort 1: survival analysis of socioeconomic factors in HGG

Variable	Median (SE)a	95% CIa	P-valuea	HRb	95% CIb	P-valueb
Rurality			.049
Frontier	18.0 (2.1)	13.8-22.2		Ref
Rural	13.0 (0.9)	11.2-14.8		0.54	0.24-1.20	.542
Urban	16.0 (0.9)	14.3-17.7		0.71	0.35-1.47	.712
Poverty indicator c			.485
<5%	17.0 (1.5)	14.1-19.9		Ref
5%-10%	13.0 (0.9)	11.2-14.8		1.07	0.76-1.51	.708
10%-20%	15.0 (1.0)	13.0-17.0		1.38	0.96-1.99	.084
>20%	15.0 (2.6)	9.9-20.1		1.31	0.81-2.11	.269
Insurance			.267
Uninsured	21.0 (3.1)	14.8-27.2		Ref
Insured, NOS	33.0 (6.8)	19.7-46.3		0.33	0.15-0.72	.005
Private insurance	22.0 (1.5)	19.0-25.0		0.07	0.36-1.04	.068
Medicare, Medicaid	9.0 (0.6)	7.9-10.1		0.05	0.31-1.01	.054
Other gov’t	13.0 (4.8)	3.6-22.4		0.43	0.24-1.84	.425
Unknown	48.0 (9.6)	29.1-66.9		0.01	0.17-0.78	.009

Abbreviations: NOS, not otherwise specified; Other gov’t, other government program.

Bold values are significant.

^aKaplan-Meier analysis and log-rank test.

^bMultivariable Cox regression analysis.

^cPercentage of a patient’s community who live at or below the poverty line.