Table 1.
Demographics and clinical characteristics of patients
| Characteristics | PD-L1 < 10% | PD-L1 ≥ 10% | Total | P-value |
|---|---|---|---|---|
| No | 59 (70.2) | 25 (29.8) | 84 (100.0) | |
| Age (year) | 68.1 ± 10.7 | 63.1 ± 12.9 | 66.7 ± 11.2 | 0.080 |
| Gender | 0.797 | |||
| Male, n (%) | 36 (61.0) | 16 (64.0) | 52 (61.9) | |
| Female, n (%) | 23 (39.0) | 9 (36.0) | 32 (38.1) | |
| Smoking history | 0.574 | |||
| Current or former, n (%) | 32 (54.2) | 16 (64.0) | 48 (57.1) | |
| Never, n (%) | 27 (45.8) | 9 (36.0) | 36 (42.9) | |
| Smoking amount (pack-years) | 32.1 ± 15.6 | 30.2 ± 15.5 | 31.5 ± 15.4 | 0.687 |
| Immunotherapy responder | 6 (10.2) | 2 (8.0) | ||
| Immunotherapy non-responder | 2 (3.4) | 1 (4.0) | ||
| Neutrophil–Lymphocyte ratio | 2.93 (1.94, 6.13) | 3.14 (1.76, 5.09) | 3.05 (1.91, 5.85) | 0.889 |
| Stage | 0.084 | |||
| I/II/III/IV, n | 24/5/14/16 | 3/4/9/9 | 27/9/23/25 | |
| Pathologic diagnosis | 0.979 | |||
| Adenocarcinoma, n (%) | 45 (76.3) | 19 (76.0) | 64 (76.2) | |
| Squamous cell carcinoma, n (%) | 14 (23.7) | 6 (24.0) | 20 (23.8) |
PD-L1, programmed death-ligand 1