Variable | Name | Definition and assignment |
---|---|---|
Y1 | Total blood loss | ml |
Y2 | Intraoperative blood loss | ml |
Y3 | Hidden blood loss | ml |
X1 | BMI | kg/m2 |
X2 | Age | year |
X3 | Sex | 0 = male; 1 = female |
X4 | Total blood volume | ml |
X5 | TXA | 0 = no TXA; 1 = TXA |
X6 | Regular FVIII prophylaxis | 0 = untreated; 1 = low dose regimen; 2 = medium dose regimen; 3 = high-dose regimen; |
X7 | HBV | 0 = no HBV; 1 = HBV |
X8 | Preoperative HB | g/L |
X9 | Postoperative HB | g/L |
X10 | Preoperative HCT | % |
X11 | Postoperative HCT | % |
X12 | FVIII peak level | % or IU·dL−1 |
X13 | FVIII valley level | % or IU·dL−1 |
X14 | Classical IVR | % |
X15 | Incremental IVR | IU·dL−1/IU·kg− 1 |
X16 | Peak level of FVIII in operation day | % or IU·dL−1 |
X17 | Operation duration | mins |
X18 | Transfuse blood | 0 = no blood transfusion; 1 = blood transfusion |
X19 | Transfusion quantity of suspended red blood cells | U |