Table 2.
History of disease in AD cohort
| Mild AD | Moderate AD | Severe AD | Total AD cohort | |
|---|---|---|---|---|
| N = 4208 | ||||
| n = 2862 | n = 1177 | n = 169 | ||
| Time since diagnosis, n (%) | ||||
| < 5 years | 1001 (35.0) | 411 (34.9) | 62 (36.7) | 1474 (35.0) |
| 6–10 years | 353 (12.3) | 155 (13.2) | 24 (14.2) | 532 (12.6) |
| 11–15 years | 242 (8.5) | 96 (8.2) | 12 (7.1) | 350 (8.3) |
| ≥ 16 years | 1165 (40.7) | 490 (41.6) | 66 (39.1) | 1721 (40.9) |
| Missing/unknown | 101 (3.5) | 25 (2.1) | 5 (3.0) | 131 (3.1) |
| Diagnosing healthcare professional, n (%) | ||||
| Primary care/general practice | 1484 (51.9) | 490 (41.6) | 65 (38.5) | 2039 (48.5) |
| Dermatologist | 977 (34.1) | 512 (43.5) | 79 (46.8) | 1568 (37.3) |
| Allergist | 90 (3.1) | 63 (5.4) | 7 (4.1) | 160 (3.8) |
| Pediatrician | 93 (3.3) | 34 (2.9) | 7 (4.1) | 134 (3.2) |
| Nurse practitioner/physician assistant | 68 (2.4) | 26 (2.2) | 3 (1.8) | 97 (2.3) |
| Other | 49 (1.7) | 27 (2.3) | 3 (1.8) | 79 (1.9) |
| Missing/unknown | 101 (3.5) | 25 (2.1) | 5 (3.0) | 131 (3.1) |
| Self-reported severity, n (%) | ||||
| Mild | 2862 (100) | – | – | 2862 (68.0) |
| Moderate | – | 1177 (100) | – | 1177 (28.0) |
| Severe | – | – | 169 (100) | 169 (4.0) |
| AD location, n (%) | ||||
| Hands | 941 (32.9) | 460 (39.1) | 73 (43.2) | 1474 (35.0) |
| Face/neck | 835 (29.2) | 420 (35.7) | 72 (42.6) | 1327 (31.5) |
| Lower arm | 706 (24.7) | 355 (30.2) | 72 (42.6) | 1133 (26.9) |
| Lower leg | 687 (24.0) | 319 (27.1) | 54 (32.0) | 1060 (25.2) |
| Upper arm | 562 (19.6) | 310 (26.3) | 63 (37.3) | 935 (22.2) |
| Scalp/head | 546 (19.1) | 309 (26.3) | 45 (26.6) | 900 (21.4) |
| Upper leg | 376 (13.1) | 239 (20.3) | 55 (32.5) | 670 (15.9) |
| Feet | 387 (13.5) | 198 (16.8) | 43 (25.4) | 628 (14.9) |
| Chest/torso | 353 (12.3) | 214 (18.2) | 42 (24.9) | 609 (14.5) |
| Back | 297 (10.4) | 203 (17.3) | 36 (21.3) | 536 (12.7) |
| Buttocks | 179 (6.3) | 138 (11.7) | 29 (17.2) | 346 (8.2) |
| Other | 236 (8.3) | 104 (8.8) | 16 (9.5) | 356 (8.5) |
| Over-the-counter treatment for AD, n (%) | ||||
| Yes | 734 (25.7) | 359 (30.5) | 56 (33.1) | 1149 (27.3) |
| No | 1688 (59.0) | 572 (48.6) | 86 (50.9) | 2346 (55.8) |
| Missing/unknown | 440 (15.4) | 246 (20.9) | 27 (16.0) | 713 (16.9) |
| Prescription treatment for AD, n (%) | ||||
| Yes | 1202 (42.0) | 504 (42.8) | 74 (43.8) | 1780 (42.3) |
| No | 1660 (58.0) | 673 (57.2) | 95 (56.2) | 2428 (57.7) |
| Prescribing healthcare professional, n (%) | ||||
| Primary care/general practice | 777 (27.2) | 256 (21.8) | 33 (19.5) | 1066 (25.3) |
| Dermatologist | 326 (11.4) | 211 (17.9) | 37 (21.9) | 574 (13.6) |
| Allergist | 32 (1.1) | 20 (1.7) | 2 (1.2) | 54 (1.3) |
| Nurse practitioner/physician assistant | 30 (1.1) | 10 (0.9) | 1 (0.6) | 41 (1.0) |
| Other | 37 (1.3) | 7 (0.6) | 1 (0.6) | 45 (1.1) |
| DLQI, n (%) | ||||
| No effect (0 or 1) | 1411 (49.3) | 269 (22.9) | 17 (10.1) | 1697 (40.3) |
| Small effect (2–5) | 978 (34.2) | 470 (39.9) | 49 (29.0) | 1497 (35.6) |
| Moderate effect (6–10) | 320 (11.2) | 240 (20.4) | 37 (21.9) | 597 (14.2) |
| Very large effect (11–20) | 129 (4.5) | 166 (14.1) | 53 (31.4) | 348 (8.3) |
| Extremely large effect (21–30) | 24 (0.8) | 32 (2.7) | 13 (7.7) | 69 (1.6) |
AD atopic dermatitis, DLQI Dermatology Life Quality Index