Table III.

Summary of overall survival analyses by univariate and multivariate COX regression analysis.

	Univariate analysis			Multivariate analysis
Factor	RR	95% CI	P-value	RR	95% CI	P-value
Age (years)	1.504	0.826–2.736	0.182
Sex	0.825	0.480–1.416	0.485
Tumor size	1.496	0.868–2.577	0.147
Histological grade	2.948	1.618–5.369	<0.001	2.478	1.238–4.960	0.010
T-stages	3.020	1.735–5.257	<0.001	4.484	0.962–20.89	0.056
N-stages	2.873	1.626–5.076	<0.001	0.475	0.107–2.117	0.329
M-stages	2.380	0.850–6.667	0.099
XLOC expression	3.848	1.901–7.788	<0.001	3.233	1.431–7.302	0.005

CI, confidence interval; RR, relative risk.