Table 3 The comparison of postoperative outcome between the two groups

Anal exhaust time (d)

3.15 ± 0.54

3.14 ± 0.42

t = 0.125

>0.05

Volume of abdominal drainage (mL)

312.00 ± 375.51

354.85 ± 358.33

t = 0.643

>0.05

Diaphragmatic fluid infection (yes/no)

0/26

1/77

χ ² = 0.337

>0.05

Pleural effusion infection (yes/no)

2/24

2/76

χ ² = 1.387

>0.05

Biliary fistula (yes/no)

0/26

1/77

χ ² = 0.337

>0.05

Body temperature (increased/not increased)

1/25

2/76

χ ² = 0.114

>0.05

Blood cell numbers (increased/back to normal)

0/26

2/76

χ ² = 0.680

>0.05