Table 3 Patients’ perioperative data

Preoperative hemoglobin (g/L)

127.27 ± 12.52

127.98 ± 12.07

0.638

Preoperative hematocrit (L/L)

0.387 ± 0.018

0.387 ± 0.324

0.916

Operation time

100.72 ± 12.18

98.34 ± 11.04

0.111

Intra-operative blood loss (mL)

229.41 ± 70.64

357.81 ± 145.30

< 0.001

Blood loss (1st day) (mL)

570.26 ± 218.27

699.03 ± 482.53

0.036

Blood loss (3rd day) (mL)

790.07 ± 233.37

1141.26 ± 482.52

< 0.001

Blood loss (5th day) (mL)

735.10 ± 291.91

1002.20 ± 483.53

< 0.001

Hidden blood loss (mL)

560.67 ± 195.54

783.45 ± 379.24

< 0.001

Transfusion rate

5.8% (5/85)

15.7% (28/178)

0.028

Transfusion volume (u)

0.060 ± 0.237

0.300 ± 0710

0.019