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Validation of ESRD due to AAV in the USRDS inclusion and exclusion chart. AAV, antineutrophil cytoplasmic antibody–associated vasculitis; ESRD, end‐stage renal disease; ICD‐9, International Classification of Diseases, Ninth Revision; ICD‐10, International Classification of Diseases, 10th Revision; MGB, Mass General Brigham; PPV, positive predictive value; USRDS, US Renal Data System.
