TABLE 4.

Correlations of serum vitamin D, calcium, zinc and IL-17 levels with regard to disease duration and VETI score

VARIABLE	DISEASE DURATION (YEARS)		VETI SCORE
	r	P-VALUE	r	P-VALUE
Vitamin D (ng/mL)	-0.02	0.915	-0.048	0.8
Calcium (mmol/L)	-0.277	0.138	-0.293	0.116
Zinc (μg/dL)	-0.251	0.18	-0.211	0.264
IL-17 (ng/L)	0.03	0.877	0.179	0.345

r=Spearman’s correlation coefficient; p<0.05 is significant

IL: interleukin; VETI: Vitiligo Extent Tensity Index