Table 1 Patients’ characteristics
Variable | NSCLC n = 80 | Control group n = 16 |
|---|---|---|
Gender n (%): | Â | Â |
 Female | 16 (20) | 3 (18.8) |
 Male | 64 (80) | 13 (81.2) |
Age, years, median (range) | 66 (45–77) | 34 (19–77)# |
Smoking history n (%):* | Â | Â |
 Non- smokers | 14 (17.5) | 10 (62.5) |
 Smokers | 66 (82.5) | 6 (37.5) |
Smoking pack-years, median (range) | 30 (0–60) | 2.5 (0–50)# |
FEV1% of pred. Median (range) | 83 (33–144) | 93 (70–114) |
FEV1/FVC ratio % of pred., median (range) | 89 (49–123) | 107 (86–114)# |
COPD n (%):* | Â | Â |
 Present | 24 (30) | 0 (0) |
 Absent | 56 (70) | 16 (100) |
Histological NSCLC type n (%): | Â | Â |
 Adenocarcinoma | 38 (47.5) | _ |
 Squamous cell carcinoma | 36 (45) | |
 Other | 6 (7.5) | |
NSCLC stage n (%): | Â | Â |
 IA-IB | 23 (28.7) | _ |
 IIA-IIB | 26 (32.5) | |
 IIIA-IIIB | 31 (38.8) | |
pT status n (%): | Â | Â |
 pT1a-2b | 58 (72.5) | _ |
 pT3–4 | 22 (27.5) | |
Lymph node status n (%): | Â | Â |
 Negative (N0) | 35 (43.7) | _ |
 Positive (N1-N3) | 45 (56.3) | |
Differentiation n (%): | Â | Â |
 Poor | 46 (57.5) | _ |
 Other | 34 (42.5) |