Table 3. Spearman correlation analysis between AEG-1, clinicopathologic factors, CD133 and PPP6c expression.

Variables	AEG-1 expression level
	Correlation coefficient	P
Age (years)	0.227	0.045
Clinical stage	0.491	0.000
Clinical grade	0.450	0.000
CD133 expression level	0.240	0.035
PPP6c expression level	0.250	0.027