Table 1. Clinical characteristics of study patients.
| Characteristic | N (%) |
|---|---|
| Age, years | 66.8±9.4 |
| Gender | |
| Male | 25 (71.4) |
| Female | 10 (28.6) |
| Smoking status | |
| Smoker | 25 (71.4) |
| Never-smokers | 10 (28.6) |
| Histology | |
| Adenocarcinoma | 27 (77.1) |
| Squamous cell carcinoma | 6 (17.1) |
| Other | 2 (5.7) |
| Invasive size | |
| ≤30 mm | 24 (68.6) |
| >30 mm | 11 (31.4) |
| Nodal status | |
| pN1 | 10 (28.6) |
| pN2/pN3 | 25 (71.4) |
| EGFR mutation | |
| Positive | 11 (31.4) |
| Negative | 23 (65.7) |
| Unknown | 1 (2.9) |
| ALK fusion | |
| Positive | 1 (2.9) |
| Negative | 27 (77.1) |
| Unknown | 7 (20.0) |
Data on age: mean ± SD. SD, standard deviation.