Table 1 Baseline characteristics
|  | Total psoriasis (n = 30) | With PsA (n = 22) | Without PsA (n = 8) | Controls (n = 30) | P-value |
|---|---|---|---|---|---|
Gender, n (%) females | 17 (56.7) | 9 (40.9) | 8 (100.0) | 22 (73.3) | 0.279* |
Age (years) | |||||
 Mean (SD) | 50.03 (11.89) | 49.82 (12.69) | 50.63 (10.13) | 42.33 (11.50) | 0.007** |
 Median (IQR) | 52.00 (18) | 51.5 (21) | 53 (16.5) | 42.00 (19.0) |  |
Disease duration (years) | |||||
 Mean (SD) | 18.31 (14.33) | 13.24 (10.48) | 32.25 (14.76) | NA | NA |
 Median (IQR) | 15 (23) | 10 (13) | 34 (18.5) | NA |  |
Ethnicity, n (%) | |||||
 Asian/Asian British | 2 (6.7) | 1 (4.55) | 1 (12.5) | 3 (10.0) | 0.324** |
 White | 28 (93.3) | 21 (95.45) | 7 (87.5) | 27 (90.0) |  |
BMI (kg/m2) | |||||
 Mean (SD) | 29.59 (6.04) | 28.86 (5.13) | 31.59 (8.13) | 29.57 (7.76) | 0.495** |
 Median (IQR) | 28.55 (7.98) | 28.55 (6.3) | 31.05 (10.2) | 27.65 (10.4) |  |
W:H ratio | |||||
 Mean (SD) | 0.94 (0.09) | 0.95 (0.09) | 0.91 (0.09) | 0.87 (0.06) | 0.001** |
 Median (IQR) | 0.95 (0.12) | 0.96 (0.09) | 0.9 (0.13) | 0.86 (0.05) |  |
Diet, n (%) | |||||
 Eat everything | 26 (86.6) | 18 (81.8) | 8 (100.0) | 26 (86.6) | 0.500* |
 Vegetarian | 2 (6.7) | 2 (9.1) | 0 (0.0) | 2 (6.7) |  |
 Flexitarian | 2 (6.7) | 2 (9.1) | 0 (0.0) | 2 (6.7) |  |
 Pescetarian | 0 (0.0) | 0 (0.0) | 0 (0.0) | 0 (0.0) |  |
Smoking, n (%) | |||||
 Never | 15 (50.0) | 11 (50.0) | 4 (50.0) | 23 (76.6) | 0.435* |
 Ex | 12 (40.0) | 9 (40.9) | 3 (37.5) | 5 (16.7) |  |
 Current | 3 (10.0) | 2 (9.1) | 1 (12.5) | 2 (6.7) |  |
Metabolic syndrome | |||||
 Present | 3 (10.0) | 2 (9.09) | 1 (12.5) | 2 (6.7) | 1.000* |