TABLE 3.
PD‐L1 and LN pathological characteristics.
| Outcomes | All patients | TPS <1% | TPS 1–49% | TPS ≥50% | p‐value |
|---|---|---|---|---|---|
| n = 291 | n = 145 | n = 108 | n = 38 | ||
| Pathological N stage | |||||
| pN1/2 | 40 (13.7) | 11 (7.6) | 18 (16.7) | 11 (28.9) | 0.002 |
| pN0 | 251 (86.3) | 134 (92.4) | 90 (83.3) | 27 (71.1) | |
| Lymph node metastasis | |||||
| Multiple | 16 (5.5) | 5 (3.4) | 4 (3.7) | 7 (18.4) | <0.001 |
| Single | 24 (8.2) | 6 (4.1) | 13 (12.0) | 5 (13.2) | |
| None | 251 (86.3) | 134 (92.4) | 91 (84.3) | 26 (68.4) |
| N upstaging group outcomes | All patients | TPS <1% | TPS 1–49% | TPS ≥50% | p‐value |
|---|---|---|---|---|---|
| n = 40 | n = 11 | n = 18 | n = 11 | ||
| Maximum axial diameter (mm) | |||||
| Mean (± SD) | 7.2 ± 3.0 | 6.3 ± 1.6 | 6.8 ± 2.4 | 8.7 ± 4.2 | 0.346 |
| Tumor invasive diameter (mm) | |||||
| Mean (± SD) | 4.6 ± 2.8 | 3.6 ± 2.0 | 4.4 ± 2.0 | 5.9 ± 4.0 | 0.309 |
| Tumor‐to‐lymph node ratio | |||||
| Mean (± SD) | 63.4 ± 24.0 | 57.1 ± 26.1 | 67.0 ± 25.7 | 64.2 ± 19.9 | 0.602 |
Note: Values for categorical variables were presented as n (%) and assessed with the Fisher's exact test. Variables for continuous variables were expressed as mean and range and were examined using the Kruskal‐Wallis test.
Abbreviations: PD‐L1, programmed death‐ligand‐1; SD, standard deviation; TPS, Tumor Proportion Score.