Application of omental interposition to reduce pancreatic fistula and related complications in pancreaticoduodenectomy: A propensity score-matched study

Table 2 Comparisons of the postoperative outcomes between the two groups

	Before PSM			After PSM
	Omental interposition group (127)	Non-omental interposition group (69)	P value	Omental interposition group (69)	Non-omental interposition group (69)	P value
CR-POPF	13 (10.2%)	17 (24.6%)	0.028	7 (10.1%)	17 (24.6%)	0.025
Operation time (mean ± SD, min)	388.3 ± 68.8	365.2 ± 75.0	0.031	392.6 ± 74.1	365.2 ± 75.0	0.033
BF, n (%)	2 (1.6)	5 (7.2)	0.041	1 (1.4)	5 (7.2)	0.208
DGE, n (%)	4 (3.1)	6 (8.7)	0.178	1 (1.4)	6 (8.7)	0.115
PPH, n (%)	1 (0.8)	8 (11.6)	0.002	1 (1.4)	8 (11.6)	0.016
Intra-abdominal abscess, n (%)	15 (11.8)	12 (17.4)	0.286	8 (11.6)	12 (17.4)	0.333
Reoperation, n (%)	3 (2.4)	6 (8.7)	0.096	2 (2.9)	6 (8.7)	0.274
Mortality in 30 d, n (%)	2 (1.6)	5 (7.2)	0.101	2 (2.9)	5 (7.2)	0.438
Mortality related to POPF, n (%)	1 (0.8)	5 (7.2)	0.038	1 (1.4)	5 (7.2)	0.210
DFA1 around the HJ site (U/L)	300.0 (74.3-893.0)	599.8 (171.1-2064.7)	0.002	200.0 (57.5-659.8)	599.8 (171.1-2064.7)	0.003
DFA1 around the PJ site (U/L)	546.8 (76.4-3094.0)	350.0 (50.0-2577.4)	0.255	325.0 (69.5-2972.5)	350.0 (50.0-2577.4)	0.951
Duration until removal of the tube around the HJ site (d)	7 (5-9)	9 (7-14)	0.000	8 (6-11)	9 (7-14)	0.115
Duration until removing the tube around the PJ site (d)	7 (6-11)	10 (7-15)	0.004	8 (6-12)	10 (7-15)	0.100
Required blood transfusions, n (%)	18 (14.2)	20 (29.0)	0.012	9 (13.0)	20 (29.0)	0.022
Length of hospital stay (d)	15 (11-22)	21 (13-32)	0.004	16 (12-24)	21 (13-32)	0.031
Duration until restarting diet (d)	6 (5-8)	8 (6-15)	0.001	7 (5-8)	8 (6-15)	0.048

BF: Biliary fistula; CR-POPF: Clinically relevant postoperative pancreatic fistula; DFA1: Drain fluid amylase obtained on the first postoperative day; DGE: Delayed gastric emptying; HJ: Hepaticojejunostomy; PJ: Pancreaticojejunostomy; PPH: Postpancreatectomy hemorrhage.