Table 1.

Preoperative patients> characteristics^*

	Ventilated group	Not ventilated group	p value
Age (y)	59.8±12.2	57.4±14.4	0.39
Gender (M/F)	38/12	36/14	0.94
Body mass index	26.2±5.4	25.3±7.3	0.41
History of cigarette smoking (%)	46	42	0.98
FEV1 (L)	2.6±0.7	2.4±0.8	0.23
FVC (L)	3.3±0.9	2.9±0.8	0.08

^*Data are presented as mean±SD

FEV₁, Forced expiratory volume in 1 second; FVC, Forced vital capacity