Characteristics of Patients in the Discovery Set.

Values are n or mean ± standard deviation. ANCA, antineutrophil cytoplasmic antibody. Characteristics of Patients in the Discovery Set.统计指标以例数（n）或均值±标准差形式呈现。 ANCA即抗中性粒细胞胞浆抗体（antineutrophil cytoplasmic antibody）。 发现队列患者的临床特征。