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Table 2 Distribution of eGFR categories among 7768 apparently healthy CKD screening participants in Anuradhapura district

From: Normality data of eGFR and validity of commonly used screening tests for CKD in an area with endemic CKD of unknown etiology; need for age and sex based precise cutoff values

eGFR level (mL/min/1.73m2)

n

%

95% confidence limits for proportion

G1 ≥ 90

4314

55.5

54.6- 56.8

G2 60–89

2633

33.9

32.7- 34.8

G3a 45–59

468

6.0

5.5- 6.6

G3b 30–44

188

2.4

2.1- 2.8

G4 15–29

113

1.5

1.2- 1.7

G5 ≤ 15

52

0.7

0.5- 0.9