Data are presented as the median (range) for continuous nonnormal variables and as the number (%) for categorical variables.
GPA, granulomatosis with polyangiitis; MPA, microscopic polyangiitis (including two patients with renal limited vasculitis); CVD, cardiovascular disease; GFR, glomerular filtration rate; ANCA, anti-neutrophil cytoplasmic antibody; PR3, proteinase 3; MPO, myeloperoxidase; BVAS, Birmingham vasculitis activity score; ENT, ear, nose, and throat.
P values indicate the comparison between GPA and MPA. Mann-Whitney U test was used for nonnormal continuous variables; Chi-squared test and Fisher’s exact test () were used for categorical variables.
General symptoms: fever, weight loss, arthralgia, myalgia.