Table 4.

Postoperative complications in 30 days after surgery according to centralization status: pre-centralization 2008–2011 and post-centralization 2013–2016

	Pre-centralization (N = 144)		Post-centralization (N = 106)		p value
	Number	Percent	Number	Percent
Postoperative complications	60	42	42	40	0.75
Anastomotic leakage	13	9.0	7	6.6	0.49
Intra-abdominal abscess	4	2.8	7	6.6	0.15
Wound infection	5	3.5	2	1.9	0.45
Postoperative bleeding	6	4.2	3	2.8	0.58
Pneumonia	29	20	19	18	0.66
Urinary tract infection	5	3.5	0	0	0.05
Cardiac complications	23	16	8	7.5	< 0.05