Table 3.

Cox regression analyses of pathological characteristics and risk score.

Variable	Univariate analysis		Multivariate analysis
	HR (95% CI)	P value	HR (95% CI)	P value
Age (years)	1.028 (1.009-1.047)	0.004∗∗	1.033 (1.012-1.049)	0.003∗∗
Gender (male/female)	1.095 (0.728-1.646)	0.664
pT stage (T1/T2/T3/T4)	2.927 (1.948-4.396)	<0.001∗∗	2.079 (1.339-3.226)	<0.001∗∗
pN stage (N0/N1/N2)	2.901 (1.898-4.434)	<0.001∗∗	1.692 (1.025-2.795)	0.039∗
pM stage (M0/M1)	4.753 (3.107-7.269)	<0.001∗∗	2.989 (1.799-4.966)	<0.001∗∗
Risk score (high/low)	1.248 (1.131-1.378)	<0.001∗∗	1.056 (1.021-1.092)	<0.001∗∗

^∗ P < 0.05,  ^∗∗P < 0.01.