Table 1 Baseline characteristics
From: Development and internal validation of a diagnostic prediction model for psoriasis severity
Mild psoriasis N = 2175 (54.2) | Moderate-to-severe psoriasis N = 1212 (30.2) | Total N = 4016 (100) | |
|---|---|---|---|
BSA, median (IQR) | 1 (1; 3) | 10 (15; 30) | 3 (1; 10) |
Missing, n (%) | 668 (16.5) | ||
DLQI, median (IQR) | 0 (0; 0) | 3.0 (0; 11) | 0 (0; 0) |
Missing, n (%) | 629 (15.7) | ||
Age, mean (SD) | 58.5 (14.2) | 57.0 (14.8) | 58.7 (14.4) |
Missing, n (%) | 0 | ||
Sex, n (%) | |||
Female | 1178 (54.2) | 677 (55.9) | 2240 (55.8) |
Missing, n (%) | 0 | ||
Clinical candidate predictors, n (%) | |||
Claimed ≥ 300g of potent or very potent topical corticosteroids in the last 3 months | 5 (0.2) | 28 (2.3) | 34 (0.8) |
Missing, n (%) | 0 | ||
Hospitalization in the last 3 months due to psoriasis | < 3 | 8 (0.2) | |
Missing, n (%) | 0 | ||
Initiated systemic non-biologic therapy for psoriasis in the last 3 months | 6 (0.3) | 7 (0.6) | 14 (0.3) |
Missing, n (%) | 0 | ||
Initiated biologic therapy for psoriasis in the last 3 months | < 3 | 8 (0.2) | |
Missing, n (%) | 0 | ||
Received phototherapy in the last 6 months | 5 (0.2) | 6 (0.5) | 14 (0.3) |
Missing, n (%) | 0 | ||
Have had ≥ 4 dermatologist contacts in the last 6 months | 107 (4.9) | 96 (7.9) | 217 (5.4) |
Missing, n (%) | 0 | ||
Switched systemic non-biologic therapy for psoriasis in the last 6 months | 6 (0.3) | 3 (0.2) | 9 (0.2) |
Missing, n (%) | 0 | ||
Switched biologic therapy for psoriasis in the last 6 months | 133 (6.1) | 55 (4.5) | 201 (5.0) |
Missing, n (%) | 0 | ||
Psoriasis within the last 12 months, n (%) | |||
No | 459 (22.8) | 50 (4.2) | 571 (14.2) |
Missing, n (%) | 587 (14.6) | ||