Table 4.

Postoperative complications in the drain and no drain groups in the matched cohort

	Drain (n = 145)	No drain (n = 145)
Grade II*
Anastomotic leakage	2	1
Pancreatic fistula	6	1
Intra-abdominal abscess	2	3
Intra-abdominal bleeding	1	0
Ileus	1	0
Chylous ascites	1	1
Pneumonia	2	2
Delayed gastric emptying	0	1
Liver injury	2	1
Fever of unknown origin	1	2
Pseudomembranous colitis	0	1
Wound infection	1	0
Catheter-related infection	1	0
Grade III*
Anastomotic leakage	3	0
Pancreatic fistula	2	1
Ileus	1	1
Pleural effusion	0	1
Anastomotic stenosis	1	0
Hepatorenal insufficiency	1	0
30-day mortality	0	0
Reoperation	3	1

*Clavien–Dindo classification