Table 3. Summary of correlations between absolute changes in the number of EPC subsets.

CFU-ECs/106 cells	0.683*
CACs/mL	0.533	-0.117
CACs/106 cells	0.233	0.117	0.567
ECFCs/mL	0.200	0.000	0.233	-0.167
CAC precursors/mL	-0.717*	-0.900**	0.033	0.050	-0.083
ECFCs/106 cells	0.050	0.083	-0.167	-0.283	0.817**	0.033
CAC precursors/106 cells	-0.500	-0.067	-0.417	0.317	0.050	0.217	0.233
	CFU-ECs/mL	CFU-ECs/106 cells	CACs/mL	CACs/106 cells	ECFCs/mL	CAC precursors/mL	ECFCs/106 cells

Data shown are Spearman's correlation coefficient. ^*Statistically significant at p<0.05, ^**Statistically significant at p<0.01. EPC: endothelial progenitor cell, CFU-EC: colony forming unit endothelial cell, CAC: circulating angiogenic cell, ECFC: endothelial colony forming cell, mL: milliliter