Table 5. Comparison of the disease states between the TH and TS groups of the matched cohort.

Variables	Category	TH (N=190), n [%]	TS (N=190), n [%]	P value
Clinical T factor	T1	167 [88]	154 [81]
	T2–4	23 [12]	36 [19]	0.0886
Radiological findings	GGO-dominant	60 [32]	71 [37]
	Solid dominant	130 [68]	119 [63]	0.2804
Clinical N factor	N0	190 [100]	190 [100]
	N1–2	0 [0]	0 [0]	1
Histology	Adenocarcinoma	173 [91]	178 [94]
	Squamous cell ca.	11 [6]	8 [4]
	Others	6 [3]	4 [2]	0.6263

TH, thoracotomy; TS, thoracoscopic surgery; GGO, ground-glass opacity.