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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
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