Demographic and clinical details of all patients.
| All, n = 170 | Primary RP, n = 67 | Secondary RP, n = 103 | |
|---|---|---|---|
| Median age (range), yrs | 46 (18–82) | 43 (18–78) | 51 (18–82) |
| Sex, male:female | 34:136 | 15:52 | 19:84 |
| Vasoactive drugs, n (%) | 57 (34) | 8 (12) | 49 (48) |
| Underlying disorders | |||
| Systemic sclerosis, n (%) | — | — | 47 (47) |
| Mixed CTD, n (%) | — | — | 6 (6) |
| Undifferentiated CTD, n (%) | — | — | 39 (39) |
| Systemic lupus erythematosus, n (%) | — | — | 3 (3) |
| Sjögren’s syndrome, n (%) | — | — | 1 (1) |
| Polymyositis, n (%) | — | — | 1 (1) |
| Hand arm vibration syndrome, n (%) | — | — | 4 (4) |
| Psoriatic arthritis, n (%) | — | — | 1 (1) |
| Juvenile idiopathic arthritis, n (%) | — | — | 1 (1) |