<qa>  What is the estimated glomerular filtration rate?3. Diagnosis of chronic kidney disease, with Kidney Disease Outcomes Quality Initiative KDOQI Stage 3, 4, or 5, not receiving dialysis; with an estimated glomerular filtration rate eGFR 60 mLmin1.73 m2 estimated using the abbreviated 4-variable Modification of Diet in Renal Disease MDRD equation. 