Table 2 Patients demographics
Number of patients | 4666 |
|---|---|
Male | 2602 |
Female | 2064 |
Age (mean) | 65.3 ± 3.2 years |
Smoking status | |
 Smoker | 2003 |
 Non-smoker | 1839 |
 Not specified | 824 |
Histological types | |
 Adenocarcinoma | 3622 |
 Squamous cell cancer | 697 |
 Large cell cancer | 54 |
 Adenosquamous carcinoma | 17 |
 Carcinoid tumor | 12 |
 Others | 264 |
 Follow up (mean) | 48.86 months |
Country | |
 Japan | 8 |
 China | 1 |
 Korea | 1 |
 Germany | 1 |
 Italy | 1 |