Table 6 Validation group: Correlations, bias, precision and accuracy of the different GFR prediction methods and measured 24hU-CrCl without statistical single data point outlier
Correlation coefficient R | SEE† | BIAS median difference† | ABSOLUTE BIAS† | PRECISION IQR (P25, P75) of differences† | ACCURACY | |||
|---|---|---|---|---|---|---|---|---|
P15 (%) | P30 (%) | |||||||
All subjects (N = 30) | mCrCl | 0.972*** | 9.0 | 0.1 | 4.3 | 6.9 (-4.4, 2.5) | 27 (90)a | 30 (100)bcd |
4vMDRD | 0.974*** | 8.7 | −8.6 | 8.6 | 14.4 (-19.7, -5.3) | 8 (27) | 17 (57) | |
CKD-EPI | 0.974*** | 8.7 | −7.1 | 7.1 | 12.9 (-17.1, -4.2) | 9 (30) | 17 (57) | |
CG-CrCl | 0.971*** | 9.3 | −4.8 | 6.6 | 9.1 (-9.0, 0.1) | 17 (55) | 28 (93) | |
Female (N = 15) | mCrCl | 0.952*** | 5.6 | −0.6 | 1.8 | 6.3 (-4.2, 2.1) | 14 (93) | 14 (93) |
4vMDRD | 0.951*** | 4.8 | −6.4 | 6.4 | 6.1 (-10.3, -4.2) | 5 (33) | 11 (73) | |
CKD-EPI | 0.929*** | 6.7 | −5.3 | 5.3 | 6.2 (-8.8, -2.7) | 5 (33) | 11 (73) | |
CG-CrCl | 0.952*** | 6.7 | −1.6 | 2.8 | 8.0 (-6.2, 1.8) | 8 (53) | 13 (87) | |
CrCl > 60 (N = 10) | mCrCl | 0.638* | 14.0 | −0.4 | 11.5 | 15.3 (-11.7, 3.5) | 9 (90) | 10 (100) |
4vMDRD | 0.668* | 13.6 | −23.2 | 23.2 | 21.4 (-35.3, -13.9) | 2 (20) | 8 (80) | |
CKD-EPI | 0.660* | 13.7 | −18.7 | 18.7 | 22.3 (-25.8, -3.5) | 4 (40) | 10 (100) | |
CG-CrCl | 0.771** | 11.6 | −8.7 | 8.7 | 14.9 (-20.6, -5.7) | 4 (40) | 10 (100) | |
BMI > 30 (N = 7) | mCrCl | 0.995*** | 5.2 | −0.4 | 1.5 | (-15.5, 1.5)†† | 7 (100) | 7 (100) |
4vMDRD | 0.991*** | 7.4 | −10.5 | 10.5 | (-42.0, -4.2)†† | 0 | 3 (43) | |
CKD-EPI | 0.995*** | 5.4 | −9.1 | 9.1 | (-34.0, -4.2)†† | 0 | 6 (86) | |
CG-CrCl | 0.987*** | 8.9 | −7.1 | 7.1 | (-26.6, 6.1)†† | 4 (57) | 7 (100) | |