Variable |  | Normal volunters (N = 20) | NSCLC patients (N = 20) | p-value | ||
---|---|---|---|---|---|---|
 | NO. | % | NO. | % | (LC vs Health) | |
Average age (years) |  | 60.6 ± 8.93 |  | 63.57 ± 10.26 |  | 0.535 |
Sex (male) | Â | 14 | 70 | 12 | 60 | 0.612 |
Smoking status | current | 9 | 45 | 10 | 50 | 0.798 |
 | Ever | 2 | 10 | 3 | 15 |  |
 | Never | 9 | 45 | 7 | 35 |  |
Histological type | Adenocarinoma | Â | Â | 6 | 30 | Â |
 | Squamous cell carcinoma |  |  | 10 | 50 |  |
 | Large cell carcinoma |  |  | 4 | 20 |  |
Stage | I/II | Â | Â | 5 | 25 | Â |
 | III |  |  | 6 | 30 |  |
 | IV |  |  | 9 | 45 |  |