Table 1. Clinical features of all patients.
| Characteristics | patients with early stage (N = 152) | Patients with osseous metastases (N = 140) | Patients with extraosseous metastases (N = 178) |
|---|---|---|---|
| Mean age (years) | 59.51 | 57.1 | 59.1 |
| Gender | |||
| male | 98 | 87 | 111 |
| female | 54 | 53 | 67 |
| ECOG PS | |||
| 0–1 | 150 | 134 | 174 |
| 2 | 2 | 6 | 4 |
| Smoking history | |||
| yes | 89 | 54 | 93 |
| no | 63 | 86 | 85 |
| Histology | |||
| adenocarcinoma | 96 | 100 | 120 |
| squamous carcinoma | 32 | 15 | 22 |
| other NSCLC | 24 | 25 | 36 |
Abbreviations: NSCLC, non-small cell lung cancer; ECOG PS, Eastern Cooperative Oncology Group performance status; N, number.