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Table 2 Quantitative data (mean ± standard deviation)

From: Hidden blood loss of total knee arthroplasty in hemophilia arthritis: an analysis of influencing factors

Variable

Name

Mean standard deviation

Y1

Total blood loss

1221.79 ± 349.89

Y2

Intraoperative blood loss

152.33 ± 67.65

Y3

Hidden blood loss

1069.51 ± 341.99

X1

BMI

20.00 ± 2.11

X2

Age

38.72 ± 8.74

X4

Total blood volume

4342.88 ± 282.75

X8

Preoperative HB

142.92 ± 13.02

X9

Preoperative HB

107.85 ± 12.86

X10

Preoperative HCT

42.30 ± 3.94

X11

Postoperative HCT

31.92 ± 3.85

X12

FVIII peak level

118.18 ± 9.22

X13

FVIII valley level

0.90 ± 1.06

X14

Classical IVR

138.37 ± 16.00

X15

Incremental IVR

2.75 ± 0.32

X16

Peak level of FVIII in the operation day

96.70 ± 9.07

X17

Operation duration

125.53 ± 27.33

X18

FVIII dose

43.06 ± 4.17

X19

Blood transfusion quantity

0.565 ± 1.369