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Table 3 Calibration

From: Comparison between three different equations for the estimation of glomerular filtration rate in predicting mortality after coronary artery bypass

 

eGFR

Slope

Intercept

U statistic

Hosmer-Lemeshow

All

 

CKD-EPI

0.69

0.12

0.38

0.40

MDRD

1.34

−1.06

0.03

0.04

CG

1.29

−1.00

0.02

0.02

eGFR

> = 60 ml/min/1.73m2

CKD-EPI

0.60

0.15

0.21

0.58

MDRD

1.20

−1.16

0.03

0.02

CG

0.57

0.18

0.39

0.48

45–59 ml/min/1.73m2

CKD-EPI

0.54

−0.14

0.15

0.78

MDRD

1.17

1.56

0.02

0.03

CG

0.59

0.20

0.28

0.32

30–44 ml/min/1.73m2

CKD-EPI

0.49

0.18

0.09

0.39

MDRD

0.22

−0.16

0.02

0.04

CG

0.28

−0.17

0.03

0.03

<=29 ml/min/1.73m2

CKD-EPI

1.13

0.58

0.04

0.04

MDRD

1.07

−0.36

0.07

0.06

CG

1.23

−0.28

0.04

0.03

Age

AGE > =60 y

CKD-EPI

1.03

0.30

0.10

0.69

MDRD

0.91

−0.04

0.43

0.53

CG

0.63

−1.35

0.02

0.03

AGE 40–59 y

CKD-EPI

0.66

−0.24

0.25

0.41

MDRD

0.60

−1.77

0.02

0.03

CG

0.92

−0.03

0.56

0.60

AGE 18–39 y

CKD-EPI

0.75

−0.88

0.32

0.37

MDRD

0.71

−1.75

0.02

0.03

CG

0.59

−1.65

0.01

0.02

Gender

Male

CKD-EPI

0.85

0.36

0.20

0.10

MDRD

0.70

−1.67

0.03

0.03

CG

0.84

−1.43

0.02

0.03

Female

CKD-EPI

0.65

−0.30

0.30

0.19

MDRD

0.81

0.89

0.44

0.72

CG

0.79

−1.33

0.03

0.03

Weight

> = 100 Kg

CKD-EPI

0.77

−0.28

0.39

0.49

MDRD

0.30

−1.43

0.01

0.02

CG

0.50

−1.30

0.02

0.02

80–99 Kg

CKD-EPI

0.65

−0.16

0.40

0.64

MDRD

0.20

−1.72

0.02

0.04

CG

0.46

−1.65

0.01

0.02

60–79 Kg

CKD-EPI

0.56

0.13

0.19

0.43

MDRD

0.70

0.11

0.31

0.59

CG

0.72

−1.47

0.02

0.02

<=59 Kg

CKD-EPI

0.63

0.18

0.10

0.32

MDRD

0.70

0.12

0.39

0.80

CG

0.88

0.20

0.40

0.47

BMI

> = 30 Kg/m2

CKD-EPI

0.87

0.13

0.58

0.67

MDRD

0.50

−2.07

0.01

0.04

CG

0.47

−1.68

0.01

0.03

25–29 Kg/m2

CKD-EPI

0.75

−0.39

0.50

0.57

MDRD

0.40

−2.05

0.01

0.03

CG

0.40

−1.75

0.02

0.02

18.5–24 Kg/m2

CKD-EPI

0.65

−0.26

0.42

0.86

MDRD

0.70

0.23

0.50

0.70

CG

0.46

−1.42

0.01

0.02

<=18.5 Kg/m2

CKD-EPI

0.85

0.71

0.16

0.36

MDRD

0.80

−0.44

0.48

0.73

CG

0.79

−0.37

0.37

0.50

  1. Best performance for: Slope = 1, Intercept = 0, non-significant P-values of the U statistic, and Hosmer–Lemeshow test. Abbreviations: eGFR: estimated Glomerular Filtration Rate; CI: Confidence Interval; CKD-EPI: Chronic Kidney Disease-Epidemiology Collaboration Formula; MDRD: Modification of Diet in Renal Disease Formula; BMI: Body Mass Index; CG: Cockroft-Gault Formula