TABLE 1.
Characteristics of patients
| Number of patients | 356 | % |
|---|---|---|
| Gender | ||
| Male | 270 | 75.84 |
| Female | 86 | 24.15 |
| Age (years) | 61.86 (40–83) | |
| Clinical stage | ||
| Limited disease | 167 | 46.10 |
| Extended disease | 188 | 52.80 |
| No data available | 1 | 0.2 |
| Performance status (Karnofsky) | ||
| >80 | 71 | 19.9 |
| 60–80 | 196 | 55.05 |
| <60 | 29 | 8.14 |
| No data available | 60 | 16.85 |
| Lactate dehydrogenase (LDH) | ||
| Normal (≤ 4.23 μkat/L) | 158 | 44.38 |
| Elevated (> 4.23 μkat/L) | 102 | 28.65 |
| No data available | 96 | 26.96 |
| C-reactive protein levels (CRP) | ||
| Normal (≤ 15 mg/L) | 122 | 34.26 |
| Elevated (> 15 mg/L) | 132 | 37.07 |
| No data available | 102 | 28.65 |
| Haemoglobin (Hb) | ||
| < 120 (g/L) | 86 | 24.15 |
| ≥ 120 (g/L) | 186 | 52.24 |
| No data available | 84 | 23.59 |
| Smoking status | ||
| Non smokers | 8 | 2.24 |
| Smokers | 163 | 45.78 |
| Ex smokers | 84 | 23.59 |
| No data available | 101 | 28.37 |
| Other malignancies | 36 | 10.11 |
| synchronic | 6 | 1.6 |
| metachronic | 30 | 8.4 |
| Brain metastases (BM) as the only site | 66 | 18.53 |
| BM at diagnoses | 37 | 10.39 |
| BM after primary treatment | 29 | 8.14 |