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Table 5 Severity score system

From: Design and methods of the NiCK study: neurocognitive assessment and magnetic resonance imaging analysis of children and young adults with chronic kidney disease

Clinical characteristics Points
Past disease activity score  
  Has the subject ever received dialysis? No = 0, Yes = 1
  Has the subject ever received a kidney transplant? No = 0, Yes = 1
  Did the subject receive dialysis or transplant at age ≤ 5 years? No = 0, Yes = 1
Current estimated glomerular filtration rate (eGFR, ml/min/1.73m2) score  
  eGFR > 60 0
  30 < eGFR ≤ 60 1
  15 < eGFR ≤ 30 2
  eGFR ≤ 15 3
Severity Score (past disease activity score + current eGFR score) 0 to 6
  1. eGFR, estimated glomerular filtration rate (using the bedside CKiD equation [12] for subjects aged <18 years or the MDRD equation [13] for those ≥ 18 years).