Table 1 Characteristics of patients.

Parameters at diagnosis	All patients (n = 87)
Sex (male:female)*	55 (63):32 (37%)
Age (years)†	55 (14–80)
ANCA titre (IIF)	1/320
CRP (mg/l)‡	126.3 (96.7)
Creatinine (μmol/l)†	117 (40–918)
BVAS†	25 (7–48)
Organ involvement*
ENT, n (%)	77 (89)
Lung, n (%)	46 (53)
Kidney, n (%)	67 (77)

ANCA, antineutrophil cytoplasmic antibodies; BVAS, Birmingham Vasculitis Activity Score; CRP, C reactive protein; ENT, ear nose throat; IIF, indirect immunofluorescence.

*Values are n (%).

†Values are median (range).

‡Mean (SD).