Table 4.

Univariate independent prognosis analysis.

	Training group		Validation group		Overall samples
	Hazard ratio	P	Hazard ratio	P	Hazard ratio	P
Age	1.021 (0.993-1.050)	0.147	1.064 (1.014-1.117)	0.011	1.030 (1.005-1.054)	0.016
Gender	0.828 (0.444-1.545)	0.554	2.008 (0.833-4.843)	0.121	1.071 (0.647-1.773)	0.789
Stage	3.100 (2.127-4.519)	<0.001	2.375 (1.442-3.911)	<0.001	2.857 (2.114-3.861)	<0.001
T	3.146 (1.715-5.771)	<0.001	3.781 (1.562-9.514)	0.003	3.337 (2.027-5.494)	<0.001
N	2.210 (1.549-3.154)	<0.001	2.662 (1.549-4.574)	<0.001	2.371 (1.764-3.186)	<0.001
M	7.199 (3.817-13.578)	<0.001	4.104 (1.740-9.680)	0.001	6.058 (3.640-10.080)	<0.001
Risk score	1.092 (1.059-1.126)	<0.001	1.161 (1.070-1.259)	<0.001	1.091 (1.063-1.119)	<0.001