What is the role of controls in an outpatient department on progression of renal disease?

Abstract

Evidence that protein restriction retards the progression of chronic renal failure in man is mostly derived from anecdotic data and retrospective studies with inappropriate controls and inferior methodology for evaluating renal function. Data from a prospective randomized study in Stockholm demonstrate that more frequent clinical follow-ups without changing the dietary intake of protein significantly retards the progression of renal failure and that the degree of retardation is correlated to improvement in blood pressure control.