The purpose of this study was to assess the viability of back-calculation with the Modification of Diet in Renal Disease (MDRD) formula to determine baseline creatinine on the basis of acute kidney injury (AKI) metrics, RIFLE criteria, and Acute Kidney Injury Network (AKIN) criteria for the purpose of clinical trial outcomes or epidemiology.
Christchurch Kidney Research Group, Department of Medicine, University of Otago-Christchurch, PO Box 4345, Christchurch 8140, New Zealand. John.Pickering@otago.ac.nz