Table 5.

Univariate and multivariate analysis of prognostic parameters of total survival time (OS) in CGGA

	Single Factor Analysis		Multi-Factor Analysis
	95% CI	P	95% CI	P
NDRG1	1.002 (1.001-1.002)	9.924E-07	1.001 (1.000-1.002)	0.03
WHO grading system	3.896 (2.894-5.246)	3.094E-19	3.216 (2.297-4.503)	1.02E-11
Age	1.636 (1.321-2.027)	6.55E-06	1.600 (1.261-2.031)	1.11E-04
Primary/Recurrent Status	2.182 (1.785-2.667)	2.597E-14	2.085 (1.666-2.610)	1.35E-10
MGMT	0.795 (0.639-0.990)	0.041	0.760 (0.610-0.947)	0.015