Main characteristics of 39 patients
| DMARD, disease-modifying antirheumatic drug; JCA, juvenile chronic arthritis; RA, rheumatoid arthritis; TNF, tumour necrosis factor. | |
| Women (n) | 32 |
| Mean disease duration (years) | 14.1 (7.1) |
| Mean age at onset of vasculitis (years) | 51.6 (11.3) |
| Sero-positive RA (n) | 30 |
| Sero-negative RA (n) | 4 |
| JCA (seen in adulthood) | 2 |
| Spondylitis | 2 |
| Psoriatic arthritis (mainly axial) | 1 |
| Previous DMARDs | 4.4 (2) |
| Etanercept | 21 |
| Infliximab | 15 |
| Adalimumab | 2 |
| Other TNF inhibitor | 1 |
| Mean treatment duration (months) | 9.6 (13) |