| Category of Anemia | Intraoperative blood transfusion in units | Maximum units of blood transfusion |
| Mild anemia (Mean RBC units ± SD) | 0.9 ±0.6 | 5 |
| Moderate anemia (Mean RBC units ± SD) | 1.2 ± 0.5 | 4 |
| Severe anemia (Mean RBC units ± SD) | none | None |