Table 3. Cox hazard regression analysis of the prediction models in the TCGA and GSE16011 datasets.

		Hazard ratio	SE	P-value
TCGA RT(+)	Model	1.641	0.184	6.98E-03
	Age	1.033	0.007	4.02E-06
	Chemotherapy	0.513	0.297	2.45E-02
	KPS	0.992	0.006	2.14E-01
TCGA RT(-)	Model	0.836	0.506	7.24E-01
	Age	1.028	0.020	1.79E-01
	Chemotherapy	1.079	0.427	8.58E-01
	KPS	0.972	0.015	4.83E-02
GSE16011 RT(+)	Model	1.681	0.236	2.77E-02
	Histological diagnosis	0.615	0.146	8.75E-04
	WHO grade	2.227	0.191	2.74E-05
	Gender	0.932	0.199	7.22E-01
	Age	1.037	0.008	3.41E-06
	KPS	0.989	0.006	7.34E-02
	Type of surgery	1.179	0.090	6.77E-02
	Chemotherapy	0.788	0.343	4.87E-01
GSE16011 RT(-)	Model	0.604	0.417	2.26E-01
	Histological diagnosis	0.796	0.249	3.59E-01
	WHO grade	2.405	0.349	1.18E-02
	Gender	2.237	0.368	2.87E-02
	Age	1.007	0.016	6.83E-01
	KPS	0.961	0.010	2.71E-05
	Type of surgery	1.363	0.160	5.24E-02

Abbreviations: RT: radiotherapy; KPS: Karnofsky Performance Score; SE, standard error; WHO: World Health Organization