Table 1.

Pre-operative characteristics of patients

Patient characteristics	Overweight (n = 141)	Controls (n = 226)	P value
BMI (kg/m2)	28.6	22.1	< 0.0001
Male/Female	75/66	127/99	0.5
Mean age (yr)	63.7	65	0.3
ASA risk
I	10.40%	5.10%	0.06
II	58.30%	53.40%	0.40
III	29.60%	36.40%	0.20
IV	1.70%	5.10%	0.30
Vascular resection	15.60%	22.10%	0.10

ASA: American Society of Anesthesiology; BMI: Body mass index.