Table 3.

Correlation assessment between primary outcome and key blood parameters and platelet and growth factor properties in samples of platelet rich plasma

Key blood parameters and platelet properties	No	r	Variance (%)*	P value
Blood cell counts
Erythrocyte count	91	0.13	1.59	0.23
Leucocyte count	91	−0.10	1.05	0.33
Platelet count†	88	0.13	1.65	0.23
Platelet quality (resting)
Resting CD62p expression (%)	93	0.10	0.92	0.75
Mean fluorescence intensity	94	−0.03	0.07	0.97
Platelet quality (activated)
Activated CD62p expression (%)	92	0.04	0.14	0.72
Mean fluorescence intensity	92	<−0.01	<0.01	0.97
Growth factors
Insulin-like growth factor 1	93	0.12	1.25	0.29
Transforming growth factor β1	88	0.01	<0.01	0.96
Platelet derived growth factor-AB	90	<0.01	<0.01	1.00
Vascular endothelial growth factor	93	−0.23	5.35	0.03
Fibroblast growth factor-basic	93	−0.10	1.05	0.33

CD62p=P selectin.

^*Proportion of variance in work limb symmetry index explained by blood parameter.

^†As fluorescent platelet count.