Intended for healthcare professionals

Letters Chronic kidney disease definition

An alternative classification system for chronic kidney disease

BMJ 2013; 347 doi: (Published 18 September 2013) Cite this as: BMJ 2013;347:f5566
  1. G Van Pottelbergh, general practitioner and researcher1,
  2. J M Degryse, general practitioner and researcher2
  1. 1Department of Public Health and Primary Care, KU Leuven, Belgium
  2. 2IRSS, UC Louvain, Belgium
  1. gijs.vanpottelbergh{at}

We have several comments on Moynihan and colleagues’ excellent article about the overdiagnosis of chronic kidney disease (CKD).1

Firstly, two large cohort studies with long follow-up have shown that the chance of developing adverse outcomes (mortality or need for renal replacement therapy) is much lower in older age groups.2 3 This finding was confirmed in a large meta-analysis …

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