Multivariable index for assessing the activity and predicting all‐cause mortality in antineutrophil cytoplasmic antibody‐associated vasculitis

Background So far, there has been no tool to estimate activity at diagnosis and predict all‐cause mortality in patients with ANCA‐associated vasculitis (AAV). Hence, we determined the initial predictors of them in patients with AAV. Methods We retrospectively reviewed the medical records of 182 patients with AAV. Severe AAV was defined as Birmingham Vasculitis Activity Score (BVAS) ≥ 16. The cutoffs were extrapolated by the receiver operator...