Table 1 Sociodemographic and clinical characteristics
| Â | Pso/PsA | RA | Healthy | |||
|---|---|---|---|---|---|---|
n = 80 | n = 78 | n = 25 | ||||
Sex, n (%) | ||||||
 Female | 56 | 70.0 | 59 | 75.6 | 16 | 64.0 |
Age in years, mean (SD) | 48.5 (12.32) | 52.7 (13.23) | 29.0 (10.13) | |||
BMI in kg/m2, mean (SD) | 27.6 (5.9) | 26.1 (4.7) | Â | |||
Disease duration in years, mean (SD) | 8.5 (10.8) | 2.4 (4.7) | Â | |||
Anti-CCP, mean (SD) | 12.6 (13.4) | 298.8 (401.7) | Â | |||
 Anti-CCP ≥ 20 U/ml, n (%) | 9 | 11.8 | 48 | 63.2 |  |  |
RF (IgA) in U/ml, mean (SD) | 6.9 (7.2) | 98.1 (163.0) | Â | |||
 IGA ≥ 20 U/ml, n (%) | 3 | 3.9 | 34 | 44.7 |  |  |
RF (IgM) in U/ml, mean (SD) | 4.2 (4.5) | 87.0 (146.1) | Â | |||
 IGM ≥ 20 U/ml, n (%) | 3 | 3.9 | 34 | 44.7 |  |  |
CRP in mg/l, mean (SD) | 3.9 (5.5) | 13.2 (16.9) | Â | |||
ESR in mm/h, mean (SD) | 17.2 (11.1) | 34.8 (23.3) | Â | |||
 HLA-B27 positive, n (%) | 2 | 15.4 | 0 | 0.0 |  |  |
 DAS28, mean (SD) (range 0–10) | 3.1 (1.4) | 5.1 (1.3) |  | |||
 TJC-28, mean (SD) (range 0–28) | 5.1 (4.5) | 8.7 (6.9) |  | |||
 SJC-28, mean (SD) (range 0–28) | 1.7 (2.4) | 5.1 (4.3) |  | |||
 Physicians’ global (VAS), mean (SD) (range 0–100) | 2.9 (2.0) | 4.7 (1.6) |  | |||
 PASI, mean (SD) | 2.9 (3.2) |  |  | |||
 Body surface area, mean (SD) | 8.5 (9.6) |  |  | |||
 Patient’s global (VAS), mean (SD) (range 0–100) | 5.0 (2.2) | 5.7 (2.1) |  | |||