Table 1 Baseline demographic characteristics of the patients
Characteristics | Case, n | PD-L1-high, n (%) | P value* |
|---|---|---|---|
Total | 62 | 25 (40.3) | Â |
Gender | Â | Â | Â |
 Male | 41 | 20 (48.8) | 0.06 |
 Female | 21 | 5 (23.8) |  |
Smoking | Â | Â | Â |
 Smoker | 35 | 18 (51.4) | 0.04 |
 Non-smoker | 27 | 7 (25.9) |  |
Age | Â | Â | Â |
 <65 | 46 | 20 (43.5) | 0.39 |
 ≥65 | 16 | 5 (31.2) |  |
Histology | Â | Â | Â |
 Adenocarcinoma | 38 | 14 (36.8) | 0.54 |
 Squamous-cell carcinoma | 20 | 9 (45) |  |
 Others | 4 | 2 (50) |  |
TNM stage | Â | Â | Â |
 I | 28 | 10 (35.6) | 0.3 |
 II | 7 | 2 (28.6) |  |
 III | 22 | 10 (45.5) |  |
 IV | 5 | 3 (60) |  |
