Table 2

Comparison of demographic and clinical characteristics between the 2 groups, by tumour type

Characteristic; indication	Group; mean ± SD^*		p value
Characteristic; indication	PRA	TLA	p value
Age, yr
All tumour types	52.6 ± 10.7	55.8 ± 12.8	0.2
Excluding pheochromocytoma	51.8 ± 10.7	55.2 ± 11.4	0.2
Pheochromocytoma	59.8 ± 7.2	56.6 ± 14.8	0.5
Primary aldosteronism	49.7 ± 9.2	54.8 ± 7.2	0.1
Cushing’s syndrome	51.5 ± 8.7	59.0 ± 4.4	0.1
Nonfunctional	61.2 ± 14.7	54.5 ± 15.3	0.4
ASA score, median (IQR)
All tumour types	3.0 (2.0–3.0)	2.6 (3.0–3.0)	0.02
Excluding pheochromocytoma	3.0 (2.0–3.0)	3.0 (2.0–3.0)	0.9^†
Pheochromocytoma	3.0 (3.0–3.0)	4.0 (3.0–4.0)	0.2^†
Primary aldosteronism	3.0 (2.0–3.0)	3.0 (3.0–3.0)	0.1^†
Cushing syndrome	3.0 (2.0–3.0)	3.0 (3.0–3.0)	0.3^†
Nonfunctional	2.5 (2.0–3.0)	2.0 (2.0–2.5)	0.5^†
Body mass index
All tumour types	26.7 ± 4.8	27.3 ± 8.0	1.0^‡
Excluding pheochromocytoma	26.9 ± 4.9	30.8 ± 7.8	0.04^‡
Pheochromocytoma	25.2 ± 4.2	22.9 ± 6.0	0.2^†
Primary aldosteronism	27.8 ± 4.8	34.8 ± 8.2	0.02^‡
Cushing syndrome	23.5 ± 4.7	23.1 ± 4.5	0.9^‡
^†Nonfunctional	26.4 ± 4.2	29.6 ± 6.5	0.2

ASA = American Society of Anesthesiologists; IQR = interquartile range; PRA = posterior retroperitoneoscopic adrenalectomy; SD = standard deviation; TLA = transperitoneal laparoscopic adrenalectomy.
↵* Except where noted otherwise.
↵† Wilcoxon rank-sum test.
↵‡ t test.