Table 2.

Regression analysis of potential risk factors for severe postoperative complications (Dindo-Clavien ≥ 3)

Risk factor	n	Complication rate	versus	n	Complication rate	p value	OR (95% CI)
Duodenopancreatic primary tumor	131	22%	Small intestinal primary tumor	133	11%	0.014	2.20 (1.13–4.29)
Duodenopancreatic primary tumor	131	22%	All non-duodenopancreatic tumors	245	10%	0.003	2.38 (1.34–4.23)
Curative resection of lymph node metastases	112	21%	No Lymph node metastases or palliative aim of resection	264	12%	0.020	1.99 (1.11–3.56)
Functioning tumor	87	23%	Non-functioning tumors	222	13%	0.042	1.91 (1.02–3.59)
NET/NEC G3	35	11%	NET G1, NET G2	321	16%	0.505	0.69 (0.17–2.09)
Age ≥ 60 years	221	14%	Age < 60 years	155	16%	0.573	0.85 (0.46–1.57)
Cardiovascular disease	112	12%	No cardiovascular disease	264	16%	0.249	0.68 (0.32–1.36)
BMI ≥ 30 kg/m2	59	24%	BMI < 30 kg/m2	193	15%	0.120	1.76 (0.79–3.78)
Men	166	17%	Women	210	13%	0.330	0.75 (0.41–1.39)

OR odds ratio; CI confidence interval; NET neuroendocrine tumor; NEC neuroendocrine carcinoma; BMI body mass index