Table 2.

Severe morbidity of pheochromocytoma surgery.

Complications	Development cohort number 262 (100%)	Validation cohort number 128 (100%)
Severe morbidity	78 (29.8%)	43 (33.6%)
Clavien II	56 (21.4%)	39 (30.4%)
Postoperative prolonged hypotension	29 (11.0%)	20 (16.0%)
Blood transfusion	23 (8.8%)	15 (11.2%)
Delirium	1 (0.4%)	2 (1.6%)
Arrhythmia	2 (0.8%)	1 (0.8%)
Pneumonia	1 (0.4%)	1 (0.8%)
Clavien III	4 (1.5%)	0 (0%)
Hydrothorax (thoracocentesis)	3 (1.1%)	0 (0%)
Hemorrhage (open laparotomy)	1 (0.4%)	0 (0%)
Clavien IV	14 (5.3%)	4 (3.2%)
Myocardial infarction	4 (1.6%)	0 (0%)
Respiratory function failure	6 (2.1%)	2 (1.6%)
Pulmonary embolism/deep vein thrombosis	1 (0.4%)	1 (0.8%)
Stroke	2 (0.8%)	1 (0.8%)
Ventricular fibrillation/flutter	1 (0.4%)	0 (0%)
Clavien IV	4 (1.5%)	0 (0%)
Mortality	4 (1.5%)	0 (0%)

Categorical variables were reported as the number (percentage).