Table 1. All characteristics of patients with and without severe vitamin D deficiency, disease localization, and rates.

	Patients with severe vit D deficiency	Patients without severe vit D deficiency	p-value
Age, average (standard deviation)	28.9 (9.7)	35.2 (13.1)	0.048
Sex, n (%)
Female	16 (57.1)	6 (24)	0.015
Male	12 (42.9)	19 (76)
Disease duration, years, median (IQR)	3 (1–5)	3 (1.7–8.5)	0.34
Age of onset, median (IQR)	23 (18.9–28.4)	26 (22–34.5)	0.14
Number of sites involved, median (IQR)	1.5 (1–3.8)	2 (1–2.5)	0.85
Scalp involvement, n (%)
Yes	26 (92.9)	22 (88)	0.55
No	2 (7.1)	3(12)
Facial involvement, n (%)
Yes	8 (28.6)	6 (24)	0.71
No	20 (71.4)	19 (76)
Nasolabial involvement, n (%)
Yes	3 (10.7)	1 (4)	0.36
No	25 (89.3)	24 (96)
Eyebrow involvement, n (%)
Yes	6 (21.4)	5 (20)	0.89
No	22 (78.6)	20 (80%)
Ear involvement, n (%)
Yes	6 (21.4)	5 (20)	0.89
No	22 (78.6)	20 (80%)
Chin involvement, n (%)
Yes	2 (7.1)	2 (8)	0.91
No	26 (92.9)	23 (92)
Chest involvement, n (%)
Yes	6 (21.4)	4 (16)	0.61
No	22 (78.6)	21 (84)
Smoking status, n (%)
Yes	7 (25)	3 (12)	0.23
No	21 (75)	22 (88)
Alcohol use, n (%)
Yes	3 (10.7)	2 (8)	0.73
No	25 (89.3)	23 (92)
Additional systemic disease, n (%)
Yes	10 (35.7)	7 (28)	0.55
No	18 (64.3)	18 (72)
Additional skin disease, n (%)
Yes	1 (3.6)	5(20)	0.089
None	27 (96.4)	20 (80%)
Subjective stress, n (%)
Yes	17 (60.7)	14 (56)	0.73
No	11 (39.3)	11 (44)