Table 3.

Logistic regression analysis of factors associated with postoperative complication

	Univariable analysis		Multivariable analysis
	OR (95 % CI)	P value	OR (95 % CI)	P value
Age	1.02 (1.00–1.03)	0.05	1.03 (0.99–1.06)	0.06
Male sex	0.77 (0.46–1.30)	0.33	–
Cardiac comorbidities	1.94 (0.89–4.21)	0.09	–
Chronic obstructive pulmonary disease	0.58 (0.20–1.66)	0.31	–
Liver disease	0.93 (0.66–1.30)	0.66	–
Diabetes mellitus	2.61 (1.32–5.05)	0.004	1.85 (0.75–4.62)	0.18
Incidental finding	0.87 (0.52–1.45)	0.59	–
Hormone secreting tumors	2.99 (1.74–5.11)	<0.001	3.56 (1.65–7.69)	0.001
Right adrenal tumor	0.92 (0.55–1.52)	0.73	–
Capsular invasion	1.88 (1.01–3.52)	0.05	1.46 (0.66–3.21)	0.35
T stage
I/II	Ref
III/IV	1.49 (0.88–2.51)	0.14	–
N stage
N0	Ref
N1	1.59 (0.64–3.96)	0.32	–
Nx	0.94 (0.50–1.77)	0.86	–
Tumor size	1.01 (0.97–1.06)	0.63	–
Operation type
Open abdominal or posterior	Ref		Ref
Minimally invasive Surgery	0.57 (0.27–1.22)	0.15	0.47 (0.14–1.59)	0.23
Thoraco-abdominal Surgery	2.59 (1.28–5.24)	0.008	2.85 (1.00–8.18)	0.05
Metastatic at time of presentation	1.61 (0.85–3.03)	0.14	–
Margin
R0	Ref
R1	1.91 (1.02–3.57)	0.04	1.17 (0.47–2.89)	0.73
R2	2.26 (0.78–6.58)	0.13	1.38 (0.37–5.15)	0.63
Multi-organ resection	1.78 (1.07–2.97)	0.03	1.84 (0.75–4.62)	0.18
Neo-adjuvant chemotherapy	6.48 (0.71–58.86)	0.10	–