irmingham vasculitis activity score; NS, nephrotic syndrome; MABP, mean arterial blood pressure; SCr, serum creatinine; eGFR, estimated glomerular filtration rate calculated using the CKD-EPI two-level race equation; UTP, urinary total protein; Alb, serum albumin; HGB, haemoglobin; ESR, estimated sedimentation rate; CRP, C-reactive protein; ANA, antinuclear antibody.  [^0]: Normal distribution data were presented as average ± SD and non-normal distribution data as median (Q00, Q00).  [^0]: A P-value \<0.0000 in *post hoc* analysis among groups: ^a^ANCA-positive IgAN versus ANCA-negative IgAN; ^b^ANCA-negative IgAN versus AASV; ^c^ANCA-positive IgAN versus AASV.  [^0]: ANCA, antineutrophil cytoplasmic autoantibody; IgAN, IgA nephropathy; TIN, tubulointerstitial nephritis; ESRD, end-stage renal disease.  [^0]: Normal distribution data were presented as average ± SD and non-normal distribution data as median (Q00, Q00).  [^0]: A P-value \<0.0000 in *post hoc* analysis among groups: ^a^ANCA-negative crescentic IgAN versus ANCA-associated crescentic glomerulonephritis; ^