Comorbidities in patients with psoriatic arthritis versus without psoriatic arthritis group
| Variable | 12-month follow-up period | ||
| Psoriasis without arthritis, n=28 240* (%) | Psoriatic arthritis, n=631* (%) | P value† | |
| Arthritis | 1678 (5.9) | 560 (89) | <0.001 |
| Infection | 14 287 (51) | 251 (40) | <0.001 |
| Rheumatoid arthritis | 232 (0.8) | 147 (23) | <0.001 |
| Hypertension | 3984 (14) | 120 (19) | <0.001 |
| Coronary atherosclerotic heart disease | 2965 (10) | 86 (14) | 0.011 |
| Dyslipidaemia | 2540 (9.0) | 83 (13) | <0.001 |
| Diabetes | 1747 (6.2) | 68 (11) | <0.001 |
| Chronic kidney disease | 1094 (3.9) | 46 (7.3) | <0.001 |
| Hyperuricaemia | 324 (1.1) | 29 (4.6) | <0.001 |
| Non-alcoholic fatty liver disease | 447 (1.6) | 23 (3.6) | <0.001 |
| Peripheral vascular disease | 569 (2.0) | 22 (3.5) | 0.01 |
| Hyperthyroidism | 170 (0.6) | 8 (1.3) | 0.062 |
| Thyroid disease | 990 (3.5) | 30 (4.8) | 0.093 |
| Psychiatric diseases | 1885 (6.7) | 52 (8.2) | 0.12 |
| Autoimmune thyroid disease | 40 (0.1) | 2 (0.3) | 0.2 |
| Hypothyroidism | 351 (1.2) | 5 (0.8) | 0.3 |
| AIDS | 18 (<0.1) | 1 (0.2) | 0.3 |
| Thyroid cancer | 30 (0.1) | 1 (0.2) | 0.5 |
| Malignancy | 428 (1.5) | 8 (1.3) | 0.6 |
| Myocardial infarction | 152 (0.5) | 4 (0.6) | 0.6 |
| Thyroiditis | 108 (0.4) | 3 (0.5) | 0.7 |
| Cerebrovascular disease | 1649 (5.8) | 37 (5.9) | >0.9 |
| Lymphoma | 20 (<0.1) | 0 (0) | >0.9 |
| Inflammatory bowel diseases | 60 (0.2) | 1 (0.2) | >0.9 |
| Obesity | 36 (0.1) | 0 (0) | >0.9 |
*n (%).
†Fisher’s exact test.; The χ2 test of independence.