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Probability (%) of number of RBC units transfused, according to preoperative haemoglobin concentration in the model, once the decision to transfuse was made.
| N. of RBC units if transfusion (according to preoperative) | Preoperative Hb | |
|---|---|---|
| <11 g/dL | ≥11 g/dL | |
| 1 unit | 90% | 62% |
| 2 units | 0% | 28% |
| 3 units | 5% | 5% |
| 4 units | 5% | 5% |
RBC: red blood cell; Hb: haemoglobin.
