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Baseline characteristics.
| Total population (N = 23) | Combined chemotherapy and immunotherapy (N = 11) | Chemotherapy alone (N = 12) | P value | |
|---|---|---|---|---|
| Age, median (years) | 63.8 | 61.0 | 64.0 | 0.554 |
| ≥ 60 | 16 | 7 | 9 | |
| < 60 | 7 | 4 | 3 | |
| Sex, n (%) | 0.692 | |||
| Male | 18 | 9 | 9 | |
| Female | 5 | 2 | 3 | |
| Histology | 0.827 | |||
| Adenocarcinoma | 11 | 5 | 6 | |
| Squamous cell carcinoma | 12 | 6 | 6 | |
| Tumor size | 0.286 | |||
| ≥ 3 cm | 22 | 10 | 12 | |
| < 3 cm | 1 | 1 | 0 | |
| Nodal involvement, n (%) | 0.538 | |||
| N1 | 5 | 3 | 2 | |
| N2 | 18 | 8 | 10 | |
| Stage, n (%) | 0.799 | |||
| II | 2 | 1 | 1 | |
| IIIA | 10 | 4 | 6 | |
| IIIB | 11 | 6 | 5 | |
