Research Article
International Burden of Chronic Kidney Disease and Secondary Hyperparathyroidism: A Systematic Review of the Literature and Available Data
Table 1
2002 National Kidney Foundation Kidney Disease Outcomes Quality Initiative staging of CKD.
| Stage | Definition |
| Stage 1 | Albuminuria with eGFR ≥ 90 mL/min/1.73 m2 | Stage 2 | Albuminuria with eGFR 60–89 mL/min/1.73 m2 | Stage 3 | eGFR 30–59 mL/min/1.73 m2 | Stage 4 | eGFR 15–29 mL/min/1.73 m2 | Stage 5 | 0–15 mL/min/1.73 m2 including dialysis (5D) and transplant (5T) recipients |
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