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Table 4 Performance of the equations

From: A more accurate method acquirement by a comparison of the prediction equations for estimating glomerular filtration rate in Chinese patients with obstructive nephropathy

Equation

Bias

Precision

Accuracy(%)

≤15 %

≤30 %

≤50 %

7MDRD

12.14**

23.33**

34.29**

57.55**

78.37**

aMDRD

14.77**

24.65**

29.80**

53.47**

74.69**

re-aMDRD

9.96**

23.33**

32.65**

60.41**

80.41**

CKD-EPIcr

13.51**

21.58**

30.61**

53.88**

78.78**

CKD-EPIcys

−4.24**

20.32**

38.78**

67.76

88.16

CKD-EPIcr-cys

2.98

19.31

44.49

69.39

87.35

  1. Bias was the mean difference between estimated and measured GFR. Precision was the SD of this difference. Accuracy was the percentage of results deviating by ≤ 15, 30 and 50%from the meaured GFR. ** P < 0.01 versus the CKD-EPIcr-cys equation
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BMC Nephrology

ISSN: 1471-2369

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