Table 1.
Baseline characteristics of all patients
| Characteristic | No. (%) (n=299) |
|---|---|
| Sex | |
| Male | 206 (68.9) |
| Female | 93 (31.1) |
| Age (yr) | |
| Median (range) | 61 (31-85) |
| ECOG PS | |
| 0-1 | 261 (87.3) |
| 2 | 38 (12.7) |
| Histology | |
| Adenocarcinoma | 198 (66.2) |
| Squamous cell carcinoma | 85 (28.4) |
| Large cell carcinoma | 6 (2.0) |
| Other | 10 (3.3) |
| Metastasis site | |
| Adrenal glands | 31 (10.4) |
| Bone | 81 (27.1) |
| Brain | 60 (20.1) |
| Liver | 32 (10.7) |
| Lung ipsilateral | 55 (18.4) |
| Lung contralateral | 73 (24.4) |
| Other | 109 (36.5) |
| Clinical stage | |
| IIIA | 2 (0.7) |
| IIIB | 37 (12.4) |
| IV | 260 (87.0) |
| Smoking history | |
| Never | 108 (36.1) |
| Former | 171 (57.2) |
| Current | 20 (6.7) |
| Previous therapy | |
| Surgery | |
| Yes | 115 (38.5) |
| No | 184 (61.5) |
| Radiotherapy | |
| Yes | 144 (48.2) |
| No | 155 (51.8) |
| Chemotherapy | |
| 1 | 81 (27.1) |
| ≥ 2 | 218 (72.9) |
ECOG PS, Eastern Cooperative Oncology Group performance status.