TABLE 1.
The clinical characteristics of patients.
| Clinical parameters | Patients (N = 77) |
| Age (years) | 60.3 (40∼78) |
| Gender | |
| Male | 56 (72.7%) |
| Female | 21 (27.3%) |
| BMI (kg/m2) | 23.4 |
| Smoking history | |
| Never smoker | 49 (63.6%) |
| Ever smoker | 28 (36.4%) |
| Tumor position | |
| Central | 23 (29.9%) |
| Peripheral | 54 (70.1%) |
| Pathology | |
| Lung adenocarcinoma | 40 (51.9%) |
| Lung squamous carcinoma | 30 (39.0%) |
| Others | 7 (9.1%) |
| Tumor stage | |
| Stage I | 40 (51.9%) |
| Stage II | 18 (23.4%) |
| Stage III | 17 (22.1%) |
| Stage IV | 2 (2.6%) |
| Lobe | |
| Right-upper | 26 (33.8%) |
| Right-middle | 2 (2.6%) |
| Right-lower | 18 (23.3%) |
| Left-upper | 20 (26.0%) |
| Left-lower | 11 (14.3%) |
Data are given as N (percentage) unless otherwise indicated. N, number; BMI, body mass index.