Table 4 Chronic Kidney Disease stages according to the National Kidney Foundation, using Cockroft Gault and Modification of Diet in Renal Disease Glomerular Filtration Rate estimations compared with CKD-Epi
|  | GFR estimation | CKD-Epi n (%) N = 955 | CG est n (%) N = 955 | p (CG vs CKD –Epi) | MDRD n (%) | p (MDRD vs CKD –Epi) |
|---|---|---|---|---|---|---|
0 | ≥90, without urine dipstick abnormality | 861 (90.2) | 751 (78.6) | <0.0001 | 834 (87.3) | 0.045 |
1 | ≥ 90, with urine dipstick abnormality | 64 (6.7) | 59 (6.2) | 0.656 | 62 (6.5) | 0.860 |
2 | 60–89, with urine dipstick abnormality | 28 (2.9) | 121 (12.7) | <0.0001 | 57 (5.9) | 0.001 |
3a | 45–59.9, with or without urine dipstick abnormality | 1 (0.1) | 15 (1.6) | 0.0004 | 1 (0.1) | 1.000 |
3b | 30–44.9, with or without urine dipstick abnormality | 1 (0.1) | 8 (0.8) | 0.022 | 1 (0.1) | 1.000 |
4 | 15–29.9, with or without urine dipstick abnormality | 0 | 0 | 1.000 | 0 | 1.000 |
5 | < 15, with or without urine dipstick abnormality | 0 | 1 (0.1) | 0.328 | 0 | 1.000 |