History of alopecia areata
| Alopecia areata | |
| n=1494 | |
| Age at AA onset, mean (SD) | 32.72 (17.6) |
| Years from onset of symptoms to diagnosis by a general practitioner | |
| Mean (SD) | 0.99 (3.4) |
| Less than 1 year, n (%) | 105 (72.4) |
| One year, n (%) | 26 (17.9) |
| Two or more years, n (%) | 14 (9.7) |
| Years from onset of symptoms to diagnosis by a dermatologist | |
| Mean (SD) | 1.18 (4.5) |
| Less than 1 year, n (%) | 671 (68.5) |
| One year, n (%) | 198 (20.2) |
| Two or more years, n (%) | 110 (11.2) |
| Did you have AA within the last 12 months? n (%) | |
| Yes | 741 (66.9) |
| Patient reported current severity of AA, NRS 0–10 | |
| Mean (SD) | 7.37 (3.2) |
| Median (IQR) | 9 (5–1) |
| Family history of AA, n (%) | |
| Siblings | 56 (5.1) |
| Mother | 47 (4.2) |
| Father | 59 (5.3) |
| Grand parents | 43 (3.9) |
| Children | 32 (2.9) |
| At least one first degree family with AA | 179 (12.0) |
.AA, alopecia areata; NRS, Numeric Rating Scale.