Group

Number of cases

Intraoperative

Abdominal closure

Postoperative

Observation group

39

36.62 ± 0.68

36.68 ± 0.58

36.50 ± 0.64

Control group

39

35.04 ± 0.96

35.22 ± 0.54

35.32 ± 0.65

t

-

7.356

10.091

7.085

P

-

0.001

0.001

0.001