Table 1. Patient characteristics.
Data are n (%) unless stated otherwise.
| Total number of patients | 878 |
|---|---|
| Sex | |
| Male | 470 (53.5%) |
| Female | 408 (46.5%) |
| Age (at time of informed consent) | |
| Median (years) | 67.8 (range: 35–91) |
| 54 or younger | 114 (13.0%) |
| 55–64 years | 241 (27.4%) |
| 65–74 years | 329 (37.5%) |
| 75 or older | 194 (22.1%) |
| Smoking history | |
| Current | 261 (29.7%) |
| Former | 298 (33.9%) |
| Never | 61 (6.9%) |
| Unknown | 258 (29.4%) |
| Stage of disease at time of inclusion | |
| Sage I-III | 474 (54.0%) |
| Stage IV | 404 (46.0%) |
| Histology | |
| Adenocarcinoma | 583 (66.4%) |
| Squamous cell carcinoma | 193 (22.0%) |
| Adenosquamous carcinoma | 10 (1.1%) |
| LCNEC | 14 (1.6%) |
| Sarcomatoid carcinoma | 8 (0.9%) |
| NOS or unknown | 70 (8.0%) |
LCNEC = large cell neuro-endocrine carcinoma. NOS = not otherwise specified.