Table 4.

Uni- and multivariable regression analysis of risk factors for complication after adrenalectomy

	Univariable logistic regression			Multivariable logistic regression
	n	OR (95% CI)	p	n	OR (95% CI)	p
Age	658	1.02 (1.00–1.04)	0.109
Sex
Female	371	Ref
Male	287	1.38 (0.75–2.53)	0.295
BMI
<25	209	Ref.
≥25	372	0.73 (0.39–138)	0.336
Tumour side			0.603
Right	254	Ref.
Left	374	1.39 (0.73–2.64)	0.315
Bilateral	30	0.00 (0.00-.)	0.998
Largest tumour size	657	1.01 (1.01–1.02)	<0.001
Surgical technique			0.001			0.112
Laparoscopic	262	Ref.		212	Ref.
Robotic	250	0.69 (0.30–1.56)	0.368	171	0.79 (0.33–1.92)	0.604
Open	146	2.61 (1.29–5.28)	0.007	84	2.03 (0.85–4.84)	0.109
Clinical syndrome of hormonal excess			0.157
None	260	Ref.
Cathecholamines	113	0.44 (0.16–1.17)	0.098
Cortisol	117	0.42 (0.16–1.13)	0.084
Aldosterone	161	0.62 (0.29–1.33)	0.222
Histopathology			0.178
Other benign	357	Ref.
Malignant	71	1.84 (0.79–4.31)	0.157
Phaeochromocytoma	100	0.61 (0.2–1.79)	0.364
Conversion
No	621	Ref.		449	Ref.
Yes	37	2.89 (1.14–7.34)	0.026	18	3.61 (1.07–12.12)	0.038

Complications that were analysed were bleeding with transfusion, laceration of viscus, pneumothorax, local infection or abscess and re-operation analysed together

BMI body mass index, OR odds ratio, CI confidence interval, Ref. referent