Table 3: Red blood cell transfusions after cardiac surgery.
| Postoperative days | Median RBC U transfused, mL | Not transfused patients, % |
| 1 | 294 (0-729) | 26.3 |
| 2 | 117 (0-492) | 48.8 |
| 3 | 240 (0-279) | 46.3 |
| 4 | 0 (0-260) | 55.0 |
| 5 | 0 (0-253) | 56.3 |
| 6 | 0 (0-262) | 53.8 |
| 7 | 0 (0-252) | 57.5 |
Results are presented as medians (25th - 75th percentiles); RBC = red blood cells; U = units.