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Model diagnostics variance inflation factor (VIF) >10 indicating the presence of multicollinearity.
| Variable | VIF | Df |
|---|---|---|
| Blood loss ratio | 1.468 | 1 |
| Oral anticoagulants | 1.041 | 1 |
| Preoperative hemoglobin | 1.322 | 1 |
| Age | 1.180 | 1 |
| Tumor stage | 1.155 | 4 |
| Duration of surgery | 1.326 | 1 |
| Norepinephrine | 1.071 | 1 |
| Female sex | 1.091 | 1 |
| Blood loss ratio x preoperative hemoglobin | 1.109 | 1 |
| Blood loss ratio x female | 1.138 | 1 |
