Table 1. Participant characteristics.

	Overall n = 239	Alopecia Universalis or Totalis n = 13	Patchy Alopecia n = 46	Other Hair Loss n = 180	p-value
Age, mean (SD)	47.9 (15.5)	55.3 (12.8)	39.8 (14.4)	49.5 (15.2)	<0.001
Female, n (%)	213 (89.5)	9 (69.2)	37 (80.4)	167 (93.3)	0.004
Race/ethnicity, n (%)
White	156 (69.0)	8 (72.7)	25 (59.5)	123 (71.1)	0.29
African American	41 (18.1)	2 (18.2)	8 (19.0)	31 (17.9)
Hispanic	15 (6.6)	0 (0.0)	7 (16.7)	8 (4.6)
Asian	12 (5.3)	1 (9.1)	2 (4.8)	9 (5.2)
Other	2 (1.1)	0 (0.0)	0 (0.0)	2 (1.2)

n = 1 unknown age, gender; n = 13 unknown race