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| ANCA specificity | PR3-ANCA | MPO-ANCA |
| Total number (diagnosis/follow-up) | 34 (25/9) | 23 (18/5) |
| Men/women | 19/15 | 11/12 |
| Age (mean ± sd) | 59±15 | 62±12 |
| Diagnosis | ||
| Wegener's granulomatosis | 31 | 4 |
| Microscopic polyangiitis | 3 | 14 |
| Necrotizing Crescentic Glomerulonephritis | 5 | |
| BVAS (median/range) | ||
| diagnosis samples | 21 (6–33) | 17 (9–29) |
ANCA: Anti-neutrophil cytoplasmic antibodies.
PR3: Proteinase 3.
MPO: Myeloperoxidase.
BVAS: Birmingham Vasculitis Activity Score.
