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

Table 3 Distribution of eGFR categories among 7768 apparently healthy CKD screening participants in Anuradhapura district by presence of proteinuria

eGFR level (mL/min/1.73m²)	Urine protein positive		Urine protein negative
eGFR level (mL/min/1.73m²)	n	%	n	%
Normal (> 90)	746	18.2	3359	81.8
Mildly decreased (60–89.9)	548	21.4	2007	78.6
Moderately to severe decrease (30–59.9)	240	37.6	399	62.4
Severely decreased (15–29.9)	85	75.9	27	24.1
Kidney failure < 15	40	78.4	11	21.6

ISSN: 1471-2369