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Table 2 Comparison of GFR estimation methods to inulin clearance

From: Adequacy of decision-making based on each kidney function estimation method for Japanese living kidney donor candidates: a retrospective observational study

GFR estimation methods(n = 210)Value (mL/min/1.73 m2)pP10P30Absolute error (mL/min/1.73 m2)
CIn55.5 (6.0–147.0)Reference   
CCr68.0 (8.5–167.3)< 0.0124%57%10.6 (− 50.5–78.4)
eGFRCr51.0 (7.9–144.4)< 0.0126%71%− 5.0 (− 56.2–41.4)
eGFRCys60.0 (5.7–181.2)< 0.0524%68%3.0 (− 51.0–57.5)
eGFRCr+Cys54.8 (7.3–153.1)n.s.35%78%− 0.6 (− 41.1–48.9)
eGFR-CKDEPICr57.7 (7.1–118.4)< 0.0132%75%− 2.4 (− 46.8–47.4)
  1. Continuous variables were presented as medians and ranges (minimum–maximum) and Wilcoxon signed-rank test was used to compare between-groups. GFR glomerular filtration rate; eGFR estimated GFR based on Cr (creatinine) Cys (cystatin C), Cr + Cys (an average of Cr + Cys), or CKDEPICr (a Cr-based equation from The Chronic Kidney Disease Epidemiology Collaboration ([CKD-EPI]); CIn inulin clearance; CCr creatinine clearance; P10 percentage of estimates falling within ± 10% of measured GFR (mGFR); P30, percentage of estimates falling within ± 30% of mGFR