Is the staple diet eaten in Medawachchiya, Sri Lanka, a predisposing factor in the development of chronic kidney disease of unknown etiology? - A comparison based on urinary β2-microglobulin measurements

Table 2 Mean urinary β ₂ m concentration of CKDu patients against the stage of CKD as per K/DOQI classification

Stage of CKD	Number of CKDu patients	GFR (mL/min/1.73 m²)	β₂m (μg/mL) (Median, Mean ± SD)
1	0	≥ 90	-
2	3	60 – 89	0.428, 0.603 ± 0.35
3	12	30 – 59	1.034, 0.950 ± 0.43
4	13	15 – 29	1.547, 1.537 ± 0.75
5	2	< 15	2.046, 2.046 ± 0.91

K/DOQI = Kidney disease outcomes quality initiative, CKD = Chronic kidney disease, GFR = Glomerular filtration rate.

ISSN: 1471-2369