Table 2.

Survival analysis on clinicopathological parameters by Cox’s multivariate model

Variables	P-value	Hazard ratio	95% CI
			Lower limit	Upper limit
Tumor differentiation	0.57	0.77	0.32	1.86
Lymph node metastasis	0.81	1.15	0.36	3.66
Distant metastasis	0.97	1.03	0.22	4.53
Neurovascular invasion	0.33	1.48	0.67	3.26
CD133 expression	0.35	0.53	0.14	2.02
Surgical resection status	0.041	4.09	1.06	15.72

¹Statistically significant; CI: Confidence interval.