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Table 4 Training group: Correlations, bias, precision and accuracy of the different GFR prediction methods and measured 24hU-CrCl

From: Quantification of excretory renal function and urinary protein excretion by determination of body cell mass using bioimpedance analysis

   Correlation coefficient R SEE BIAS Median difference ABSOLUTE BIAS PRECISION IQR (P25,P75) of differences ACCURACY
P15 (%) P30 (%)
All subjects (N = 60) mCrCl 0.970*** 8.7 7.4 8.5 16.4 (1.1, 17.5) 48 (80)a 56 (93)bcd
4vMDRD 0.930*** 13.1 −11.7 12.10 13.6 (-19.6, -5.9) 15 (25) 37 (62)
CKD-EPI 0.950*** 10.7 −10.2 10.4 10.6 (-15.5, -4.9) 21 (35) 45 (75)
CG-CrCl 0.840*** 19.3 −4.4 9.2 14.2 (-11.2, 3.0) 26 (43) 51 (85)
  1. ***p < 0.001
  2. displayed in mL/min/1.73 m2;
  3. ap < 0.001 vs the three other methods; bp = 0.001 vs 4vMDRD; cp < 0.05 vs CKD-EPI; dp = 0.18 vs CG