Table 1.

Binary logistic regression model for seborrheic dermatitis risk.

Variable	OR	95% Cl	p value
Gender (male vs. female)	1.26	0.773–2.061	0.351
BMI	0.942	0.88–1.008	0.084
Serum 25(OH)D level	0.898	0.840–0.960	0.002
Vitamin D insufficiency or deficiency (<30 ng/ml)	4.22	1.077–16.534	0.039
Vitamin D, sufficient (≥30 ng/ml)	0.854	0.783–1.007	0.07
Vitamin D, insufficient (<30 and >20 ng/ml)	1.594	0.844–3.013	0.151
Vitamin D, deficient (<20 ng/ml)	1.845	1.081–3.152	0.025
OR, odds ratio; CI, confidence interval