[Retracted] A Retrospective Study of Effectiveness of Thoracoscopic Lobectomy and Segmentectomy in Patients with Early-Stage Non-Small-Cell Lung Cancer

Table 4

Comparison of pulmonary function indexes between the two groups (, L).

Groups	Number of cases	FEV1		FVC		MVV
		Presurgery	3 months after surgery	Presurgery	3 months after surgery	Presurgery	3 months after surgery
Observation group	47		^a		^a		^a
Control group	47		^a		^a		^a
		0.466	4.101	0.524	4.320	0.657	7.478
		0.643	0.001	0.602	0.001	0.513	0.001

Note: ^a, compared with the group before surgery. FEV1: forced vital capacity in 1 second; FVC: forced vital capacity; MVV: maximal voluntary ventilation.