Table 1.
Characteristics of patients (n = 258)
| Age | |
| (Mean ± SD) | 63.9 ± 10.1 |
| (Median, min-max) | 66 (25–82) |
| Gender (male: female) | 183/74 |
| Smokers/Non-smokers | 222/22 |
| No cigarettes per day | |
| (Mean ± SD) | 15.3 ± 7.9 |
| (Median, min-max) | 14 (2–50) |
| Total years of smoking | |
| (Mean ± SD) | 41.3 ± 11.6 |
| (Median, min-max) | 43 (2–69) |
| Total pack-years* | |
| (Mean ± SD) | 31.6 ± 18.2 |
| (Median, min-max) | 28 (1–113) |
| Histology | |
| Adenocarcinoma | 118 (45.7 %) |
| Squamous cell carcinoma | 103 (39.9 %) |
| Large cell carcinoma | 36 (13.9 %) |
| Others | 1 |
| PAH-DNA adducts † | |
| (Mean ± SD) | 12.3 ± 8.9 |
| (Median, min-max) | 10 (1–46) |
| TP53 mutated/WT | 134/101 |
*Pack-years indicates the number of cigarettes smoked per day x number of years smoked/20. †PAH-DNA adducts per 108 nucleotides