Additional file 3.

Urinary NAG/Cr according to chronic kidney disease stages. Patients in chronic kidney disease (CKD) stage III (estimated GFR < 60 mL/min/1.73 m2) showed significantly higher urinary NAG/Cr compared with CKD stage I or II (6.48 ± 3.79 vs. 3.7 ± 2.13 vs. 4.67 ± 2.47, P < 0.001).

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Park et al. BMC Nephrology 2012 13:93   doi:10.1186/1471-2369-13-93