Table 3 Univariate analysis

Gender

3.528

0.060

Male

72

18

Female

108

13

Age

23.411

<0.001

≥ 65 years old

48

22

<65 years old

132

9

Course of disease

0.143

0.704

≥ 3 years old

113

22

<3 years old

67

15

BMI

21.450

<0.001

≥ 25 kg/m²

60

24

<25 kg/m²

120

7

Affected side

0.890

0.345

Left side

92

13

Right side

88

18

Past medical history

Hypertension

63

18

0.704

0.401

Diabetes

41

4

1.536

0.215

Operation time (min)

35.25 ± 5.59

36.21 ± 6.28

0.429

0.791

Intraoperative perfusion volume (mL)

4900.80 ± 616.95

4971.66 ± 585.36

0.113

0.909

Length of stay (d)

7.00 ± 0.96

7.25 ± 0.83

1.540

0.125

Preoperative ROM score

6.90 ± 1.49

7.89 ± 1.35

3.389

0.001

Preoperative VAS score

92.11 ± 7.63

92.51 ± 6.83

0.613

0.540