Table 1 Baseline data of the included patients

Number of patients (n)

39

Gender (n), Male/female

17/22

Age (year), mean ± SD

44.3 ± 11.2

BMI (kg/m²), mean ± SD

21.3 ± 2.1

ASA grade (n)

 I

25

 II

12

 III

2

Operative time (min), mean ± SD

135.8 ± 19.2

Operative blood loss (ml), mean ± SD

239.4 ± 84.7

Hospital stay (day), mean ± SD

9.5 ± 2.7

Follow-up time (month), mean ± SD

26.3 ± 7.5