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NKF/DOQI classification of patients in this study
| Stage | GFR (mL/min) | CrCl (%) |
|---|---|---|
| 1 | ≥90 | 17 (56.7) |
| 2 | 60–89 | 9 (30.0) |
| 3 | 30–59 | 4 (13.3) |
| 4 | 15–29 | – |
| 5 | <15 | – |
Abbreviations: NKF, National Kidney Foundation; DOQI, Dialysis Outcome Quality Initiative; GFR, glomerular filtration rate; CrCl, creatinine clearance.
