Table 4.

Univariate analysis for survival

Variable	3‐year OS (%)	P	3‐year RFS (%)	P
Air bronchogram type	91.7	0.029	83.3	0.04
Non‐air bronchogram type	49.6		49.7
GGO type	100	0.176	100	0.100
Non‐GGO type	53.9		47
Pathological stage
I & II	86.7	0.01	75.0	0.117
III	37.5		39.8
Lymph node metastasis
Negative	81.4	0.03	68.6	0.405
Positive	45.5		46.8
Tumor size
≤ 5 cm	71.8	0.182	68.3
> 5 cm	50.0		33.3
Adenocarcinoma component
Yes	83.3	0.626	67.2	0.027
No	68.8		50.0
Adjuvant therapy
Yes	50.9	0.238	51.6	0.173
No	80.1		71.5

AB, air bronchogram; GGO, ground glass opacity.; OS, overall survival; RFS, recurrence‐free survival.