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Table 3 Explanatory parameters of value and stage discordance

From: Comparison of automated and retrospectively calculated estimated glomerular filtration rate in electronic health record data

Equation parameter(s)

Median of absolute difference

Number of pairs

%

Discordant eGFR value

 Any

4.0

86,747

100.00

 1 clinical

12.0

484

0.56

 1 demographic 1 clinical

7.0

208

0.24

 2 demographics

8.0

3562

4.11

 1 demographic

4.0

82,493

95.10

 Race

15.0

2151

2.61

 Gender

29.0

151

0.18

 Age

4.0

78,903

95.65

 Gender or age

29.0

10

0.01

 Race or gender

1.0

6

0.01

 Race or age

16.0

1265

1.53

 Race, gender, or age

1.0

7

0.01

Discordant eGFR value and stage

 Any

4.0

12,205

100.00

 1 clinical

12.0

266

2.18

 1 demographic 1 clinical

34.5

8

0.07

 2 demographics

12.0

909

7.45

 1 demographic

6.0

11,022

90.31

 Race

16.0

1089

9.88

 Gender

25.0

73

0.66

 Age

5.0

9371

85.02

 Gender or age

28.0

6

0.05

 Race or gender

0.0

0

0.00

 Race or age

17.0

483

4.38

 Race, gender, or age

NA

0

0.00

Discordant eGFR value only

 Any

6.0

74,542

100.00

 1 clinical

12.0

218

0.29

 1 demographic 1 clinical

7.0

200

0.27

 2 demographics

7.0

2653

3.56

 1 demographic

4.0

71,471

95.88

 Race

14.0

1062

1.49

 Gender

35.0

78

0.11

 Age

4.0

69,532

97.29

 Gender or age

34.0

4

0.01

 Race or gender

1.0

6

0.01

 Race or age

15.0

782

1.09

 Race, gender, or age

1.0

7

0.01

  1. eGFR estimated glomerular filtration rate, Clinical parameter: serum creatinine; Demographic parameters: age, race, gender