Table 1. Comparison of preoperative data.

Variable	VATS (n=20)	Thoracotomy (n=20)	P value
Age, years	31.5 [19-67]	33.5 [16-60]	0.559
Gender
Male	8 (40%)	9 (45%)
Female	12 (60%)	11 (55%)
Pulmonary function
FVC (L)	3.0 (2.4-4.5)	3.1 (2.6-4.7)	0.563
FEV1 (L)	2.1 (1.6-3.5)	2.2 (1.5-3.3)	0.597
FEV1/FVC%	69.7 (53.3-93.1)	71.1 (56.1-93.4)	0.510

FVC, forced vital capacity; FEV₁, forced expiratory volume in one second.