... (CKD). The main pur-pose of this interim report is to review the initial cross-sectional data and conclusions derived from the clini-cal studies conducted within CKiD in the context of findings from ... apart, lossto follow-up rates, and the rates of reaching renal replace-ment therapy in the first few years of the cohort study. Weestimated that by the end of the follow-up period, wewould have ... outlined in the initialrequest for application from the NIH, we needed toestimate the average GFR decline and SD, estimates of*Department ofPediatrics, Division ofNephrology, The Children’s...