Demographic and clinical characteristics of the study population
| Psoriasis (N=404) | PsA (N=728) | p Value | |||
|---|---|---|---|---|---|
| Age, years* | 46.3 (13.1) | 36.9 (13.1) | <0.0001 | ||
| Sex: female, % | 177 (43.8%) | 297 (40.8%) | 0.34 | ||
| Age at onset psoriasis, years | 30.2 (16.0) | 27.8 (14.5) | 0.01 | ||
| Age at onset PsA, years | – | 36.9 (12.9) | |||
| Duration of psoriasis* | 16.1 (14.1) | 9.2±10.2 | <0.0001 | ||
| PASI (maximum in 3 years) | 6.3 (6.1) | 8.8±10.2 | <0.0001 | ||
| Severe psoriasis | 65 (16.9%) | 204 (29.1%) | <0.0001 | ||
| Alcohol consumption | |||||
| Daily | 38 (9.4%) | 80 (11.8%) | 0.32 | ||
| Social | 252 (62.5%) | 398 (58.4%) | |||
| Arthritis pattern at diagnosis | |||||
| Distal joints only | – | 51 (7.8%) | |||
| Oligoarthritis | 232 (35.4%) | ||||
| Polyarthritis | 235 (35.9%) | ||||
| Axial only | 25 (3.8%) | ||||
| Axial + distal joints | 5 (0.8%) | ||||
| Axial + oligoarthritis | 37 (5.7%) | ||||
| Axial + polyarthritis | 70 (10.6%) | ||||
| Total damaged joints | – | 3.0 (7.5) | |||
↵* Determined at the time of the diagnosis of psoriatic arthritis (PsA) (for PsA patients) and at first study visit (for psoriasis patients).
PASI, psoriasis area severity index.