Table 2.

Univariate Cox analysis for overall survival of risk signature and clinical parameters in training, testing, and all groups

	Variable	HR	95% CI	P value
Training	Risk score (low risk vs high risk)	5.824	3.708‐9.147	<0.001
	Age (≤60 vs >60)	1.012	0.977‐1.049	0.4901
	Stage (I and II vs III and IV)	4.837	2.292‐10.209	<0.001
	Gender (male vs female)	0.459	0.196‐1.075	0.073
Testing	Risk score (low risk vs high risk)	1.930	1.334‐2.793	<0.001
	Age (≤60 vs >60)	0.995	0.965‐1.027	0.771
	Stage (I and II vs III and IV)	22.461	2.873‐175.59	0.003
	Gender (male vs female)	0.818	0.238‐2.817	0.750
All	Risk score (low risk vs high risk)	2.613	2.100‐3.252	<0.001
	Age (≤60 vs >60)	0.996	0.969‐1.025	0.794
	Stage (I and II vs III and IV)	6.473	3.362‐12.462	<0.001
	Gender (male vs female)	0.591	0.297‐1.178	0.135

CI, confidence interval; HR, hazard ratio.