Table 2. Matched Multivariable Analysis of Alopecia Areata and Hair Color.

Variable	aOR (95% CI)	P value
Diabetes
Yes	0.96 (0.74-1.25)	.74
No	1 [Reference]	NA
Hypothyroidism
Yes	1.56 (1.30-1.87)	<.001
No	1 [Reference]	NA
Hyperthyroidism
Yes	0.81 (0.50-1.33)	.41
No	1 [Reference]	NA
Vitiligo
Yes	4.35 (2.34-8.07)	<.001
No	1 [Reference]	NA
Hair color
Blond	0.69 (0.56-0.85)	<.001
Red	0.94 (0.70-1.26)	.68
Light brown	1 [Reference]	NA
Dark brown	1.26 (1.11-1.42)	<.001
Black	2.97 (2.38-3.71)	<.001

Abbreviations: aOR, adjusted odds ratio; NA, not applicable.