Table 4.

Correlation analysis of SIRT1 with VEGF or Survivin expression at tumor microarray

Variables	Tumor microarray (n=75)
	SIRT1 (high)	SIRT1 (low)
VEGF (high)	41	9
VEGF (low)	15	10
r	0.238
P	0.039*
Survivin (high)	40	9
Survivin (low)	16	10
r	0.220
P	0.058

Note: The asterisk indicates statistical significance.

Abbreviations: SIRT1, silent mating-type information regulation 2 homolog 1; VEGF, vascular endothelial growth factor; n, sample number.