Table 4.

Cox proportional hazard regression analysis for disease-free survival.

Characteristics	Univariate analysis				Multivariate analysis
	HR	95% CI		P value	HR	95% CI		P value
		Lower	Upper			Lower	Upper
Gender	1.393	0.817	2.374	0.224
Age	0.798	0.469	1.356	0.404
Tumor size	2.037	1.186	3.498	0.010
Differentiation degree	3.788	2.077	6.912	<0.001	3.357	1.676	6.772	0.001
Tumor location	1.180	0.974	1.430	0.091
T stage	3.591	1.876	6.876	<0.001
N stage	2.069	1.481	2.891	<0.001
M stage	2.630	1.319	5.245	0.006
TNM stage	1.974	1.455	2.680	<0.001
KIF20A expression	3.599	1.809	7.161	<0.001	2.792	1.311	5.946	0.008

Abbreviations: HR: hazard ratio; CI: confidence interval.