Table 3. PD-L1 expression does not correlate with clincopathological parameters.
| Variable (number of patients evaluated) | PD-L1 expression | p-value | ||
|---|---|---|---|---|
| Positive | Negative | |||
| Tumor stage (99) | High | 2 | 14 | 0.66 |
| Low | 8 | 75 | ||
| NA | 0 | 4 | ||
| Depth of stromal invasion (87) | > 1mm | 4 | 32 | 0.16 |
| ≤ 1mm | 1 | 50 | ||
| NA | 5 | 11 | ||
| Lymph node involvement (71) | Present | 4 | 27 | 0.69 |
| Absent | 3 | 37 | ||
| NA | 3 | 29 | ||
| Metastasis (99) | Present | 1 | 4 | 0.42 |
| Absent | 9 | 85 | ||
| NA | 0 | 4 | ||
| Tumor grade (102) | High | 9 | 81 | 1.00 |
| Low | 1 | 11 | ||
| NA | 0 | 1 | ||
| Lymphovascular space invasion (88) | Present | 0 | 8 | 0.59 |
| Absent | 10 | 70 | ||
| NA | 0 | 15 | ||
| Haemangioinvasion (88) | Present | 0 | 6 | 1.00 |
| Absent | 10 | 72 | ||
| NA | 0 | 15 | ||
NA, not available.