Table 3. Tumor Location.

	Subcategory	Non-PV	PV	HR	SE	p-value
Number		59	27
Age
	<50	14(24%)	4(15%)
	>50	45(76%)	23(85%)	0.34	0.31	NS
	Median	56	59
Resection Status
	GTR	28(47%)	4(15%)	0.45	0.56	NS
	STR	25(42%)	15(56%)	0.54	0.55	NS
	Biopsy	6(10%)	8(30%)
Tumor Volume
	GTV1	84.7	104.9	0.009	0.003	0.0007

Abbreviations: PV, periventricular: GTR, gross total resection; STR, sub-total resection.