Table 3.

Cox proportional hazard regression analysis for overall survival.

Characteristics	Univariate analysis				Multivariate analysis
	HR	95% CI		P value	HR	95% CI		P value
		Lower	Upper			Lower	Upper
Gender	1.357	0.743	2.477	0.320
Age	0.692	0.380	1.258	0.227
Tumor size	2.086	1.131	3.848	0.019
Differentiation degree	5.299	2.799	10.030	<0.001	5.138	2.374	11.119	<0.001
Tumor location	1.218	0.970	1.530	0.090
T stage	4.469	2.112	9.458	<0.001
N stage	2.630	1.817	3.805	<0.001
M stage	3.396	1.661	6.944	0.001
TNM stage	2.520	1.761	3.608	<0.001
KIF20A expression	4.457	1.877	10.579	0.001	2.803	1.095	7.175	0.032

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