|
| Number (%) | Mean age (standard deviation) |
| Connective tissue disease | 193 (95.07%) | 44.84 (15.18) |
| Rheumatoid arthritis | 83 (40.89%) | 49.08 (15.22) |
| Systemic erythematous lupus | 76 (37.44%) | 39.61 (13.96) |
| Mixed/undifferentiated connectivitis | 17 (8.37%) | 40.34 (13.17) |
| Systemic sclerosis | 16 (7.88%) | 52.51 (14.11) |
| Sjögren’s syndrome | 1 (0.49%) | 54 |
| Vasculitis | 10 (4.92%) | 31 (15.45) |
| Behçet’s disease | 4 (1.97%) | 25.13 (5.73) |
| Hypocomplementemic urticarial vasculitis | 2 (0.98%) | 28.61 (0.75) |
| Undifferentiated vasculitis | 2 (0.98%) | 31.08 (33.97) |
| giant cell arteritis | 1 (0.49%) | 58 |
| Eosinophilic granulomatosis with polyangiitis | 1 (0.49%) | 34 |