Table 3. Predictors of surgical risk and survival on multivariate analysis.

Abbreviations. HR: harzard ratio; CI: confidence interval; GP: globus pallidus; KPS: Karnofsky Performance Status

	Factor	HR (95% CI)	P Value
Survival	Grade 4	8.1 (2.5 – 26.7)	.001
	Grade 3	5.7 (1.6 – 20.4)	.007
	Volume > 50cc	4.4 (2.1 – 9.4)	.0001
	GP/Putamen involvement	2.6 (1.1 – 5.7)	.023
	KPS >70 at 3 Months	0.3 (0.1 – 0.7)	.005
Weakness	Frontal involvement	4.3 (1.4 – 13.8)	.013
	Lenticulostriate encasement	4.4 (1.0 – 20.6)	.057
Speech	Temporal predominance	0.1 (0.01 – 0.7)	.026