Table. Patient Demographics and Disease Characteristics.
| Characteristic | All patients (N = 3541) |
|---|---|
| Age, median (range), y | 38 (18-95) |
| Age group, No. (%), y | |
| 18-34 | 1280 (36.1) |
| 35-54 | 1543 (43.6) |
| ≥55 | 718 (20.3) |
| Sex, No. (%) | |
| Female | 1603 (45.3) |
| Male | 1933 (54.6) |
| Nonbinary | 5 (0.1) |
| Race and ethnicity, No. (%)a,b | |
| Asian | 929 (30.5) |
| Black | 283 (9.3) |
| Central or South American | 144 (4.7) |
| Middle Eastern or North African | 135 (4.4) |
| White | 1555 (51.1) |
| Otherc | 75 (2.5) |
| Prefer not to answer | 13 (0.4) |
| Fitzpatrick skin type, No. (%)d | |
| I-III | 2096 (59.2) |
| IV-VI | 1445 (40.8) |
| Geographic region, No. (%) | |
| Africa or Middle East | 201 (5.7) |
| Asia | 1005 (28.4) |
| Australia | 75 (2.1) |
| Brazil | 301 (8.5) |
| Canada | 200 (5.6) |
| Europe | 1151 (32.5) |
| US | 608 (17.2) |
| Age at diagnosis, median (range), y | 30 (0-95) |
| Time before diagnosis, mean (SD), y | 2.4 (4.1) |
| Disease duration, mean (SD), y | 12.7 (12.6) |
| Affected BSA, median (range), % | 4.0 (0-73.9) |
| More than 5% affected BSA, No. (%) | 1602 (45.2) |
Abbreviation: BSA, body surface area.
a
Multiple answers were accepted.
b
Race and ethnicity were not solicited in France (n = 250) or Germany (n = 250).
c
Category taken from the survey with no further breakdown available.
d
Fitzpatrick skin types are defined as follows: type I, pale white skin; type II, white skin; type III, light brown skin; type IV, moderate brown skin; type V, dark brown skin; and type VI, deeply pigmented dark brown to black skin.