Table 2. Cox univariable regression for overall mortality.

	Standard error	Hazard ratio	95% confidence interval	p-value
No Temozolamide	0.312	2.867	1.556–5.282	0.001
KPI < 60	0.461	7.308	2.958–18.507	<0.0001
No GTR	0.283	2.636	1.514–4.590	0.001
No reoperation	0.365	3.581	1.752–7.321	<0.0001
No radiotherapy	0.528	19.705	6.999–55.474	<0.0001

KPI: Karnofsky performance index GTR: Gross total resection.