Table 3 Partial correlation between markers of GFR and haematological parameters after correction for sex.
| Cockcroft‐Gault GFR (ml/min) | MDRD GFR (ml/min/1.73 m2) | Calculated CC clearance (ml/min/1.73 m2) | WBC (×109/l) | Hb (g/l) | MCV (fl) | RDW (%) | Platelets (×109/l) | HbF (%) | ||
|---|---|---|---|---|---|---|---|---|---|---|
| Cockcroft‐Gault | r | |||||||||
| GFR (ml/min) | p | |||||||||
| MDRD GFR | r | 0.764 | ||||||||
| (ml/min/1.73 m2) | p | <0.0001 | ||||||||
| Calculated CC clearance (ml/min/1.73 m2) | r | 0.037 | 0.026 | |||||||
| p | 0.838 | 0.883 | ||||||||
| WBC (×109/l) | r | −0.285 | −0.179 | 0.059 | ||||||
| p | 0.055 | 0.229 | 0.732 | |||||||
| Hb (g/l) | r | −0.067 | −0.219 | 0.086 | −0.577 | |||||
| p | 0.658 | 0.139 | 0.614 | <0.0001 | ||||||
| MCV (fl) | r | −0.006 | 0.071 | −0.015 | 0.224 | −0.038 | ||||
| p | 0.968 | 0.637 | 0.931 | 0.111 | 0.788 | |||||
| RDW (%) | r | 0.601 | 0.472 | −0.192 | 0.069 | −0.152 | −0.151 | |||
| p | <0.0001 | 0.002 | 0.301 | 0.644 | 0.306 | 0.311 | ||||
| Platelets (×109/l) | r | −0.023 | 0.180 | 0.252 | 0.658 | −0.424 | −0.012 | 0.092 | ||
| p | 0.881 | 0.225 | 0.138 | <0.0001 | 0.002 | 0.931 | 0.540 | |||
| HbF (%) | r | 0.205 | 0.023 | −0.266 | −0.364 | 0.341 | 0.082 | 0.031 | −0.347 | |
| p | 0.224 | 0.889 | 0.135 | 0.017 | 0.024 | 0.596 | 0.845 | 0.023 |
CC, cystatin C; GFR, glomerular filtration rate; Hb, haemoglobin; MCV, mean cell volume; MDRD, modified Modification of Diet in Renal Disease; RDW, red cell distribution width; WBC, white blood cell count.