Table 5:

Correlation between main factors in the scleroderma and control groups

Groups	Klotho and 25-OH D*		Klotho and iPTH*		iPTH and 25-OH D**
	r	P	r	P	R	P
Scleroderma	−0.145	0.270	0.136	0.301	−0.531	<0.001
Control	0.278	0.137	0.097	0.610	−0.150	0.430

Note: FGF-f23: fibroblast growth factor 23; 25-OH D, 25-hydroxy vitamin D; iPTH: intact parathyroid hormone

^*Spearman’s correlation;

^**Pearson’s correlation