Table 4.

Comparison of studies which analyzed mortality of patients with AAV.

Author, yr	Lai (2014)	Pu (2017)	Heijl (2017)	Flossman (2010)	This study
Population	Chinese	Chinese	Swedish	European	Brazilian
Number of patients	398	123	195	535	128
GPA/MPA/EGPA (%)	26.1/67.6/0	Not described	48/46/6	52.5/47.5/0	78.9/4.6/16.4
Mortality (%)	33.9	37.4	50.2	24.9	24.3
Mortality predictors	Age, secondary infection, pulmonary involvement, initial kidney function	BVAS, pulmonary hemorrhage, digestive system involvement, higher creatinine	Age, renal impairment, cardiovascular and gastrointestinal clusters	GFR <15 mL/min, age, BVAS, lower hemoglobin, higher white cell count	VDI, creatinine, CRP

AAV = ANCA-associated vasculitis, BVAS = Birmingham vasculitis activity score, CRP = C-reactive protein, EGPA = eosinophilic granulomatosis with polyangiitis, GFR = glomerular filtration ratio, GPA = granulomatosis with polyangiitis, MPA = microscopic polyangiitis, VDI = vasculitis damage index.