Table 1. Baseline characteristics.
| Characteristics | Total (n=37)n (%) |
|---|---|
| Age, year | |
| Median (Range) | 63 (33-77) |
| Sex | |
| Male | 27 (73.0) |
| Female | 10 (27.0) |
| Metastatic sites | |
| Lung | 20 (54.1) |
| Pleural | 5 (13.5) |
| Brain | 4 (10.8) |
| Others | 8 (21.6) |
| Pathology | |
| Squamous cell carcinoma | 10 (27.0) |
| Adenocarcinoma | 27 (73.0) |
| Smoking History | |
| Never smoker | 11 (29.7) |
| Ex and current smoker | 26 (70.3) |
| AJCC7 stage | |
| Stage I | 21 (56.7) |
| Stage II | 9 (24.3) |
| Stage III | 7 (18.9) |
| EGFR mutation status | |
| Exon 19 del | 4 (10.8) |
| Exon21 L858R | 3 (8.1) |
| Exon20 insertion | 1 (2.7) |
| Adjuvant chemotherapy | |
| Yes | 21 (56.8) |
| Surgical biopsy method | |
| Wedge resection of lung | 16 (43.2) |
| Lobectomy of lung | 3 (8.1) |
| Excision | 14 (37.8) |
| Craniotomy | 4 (10.8) |