| PD-1+ macrophage (%) | P value |
---|---|---|
Gender | Â | 0.24 |
 Male (n = 75) | 2.40 (±4.15) |  |
 Female (n = 27) | 1.24 (±2.45) |  |
Age | Â | 0.036 |
 ≥ 75 (n = 36) | 3.31 (±4.93) |  |
 < 75 (n = 66) | 1.42 (±2.83) |  |
Depth of invasion a | Â | 0.86 |
 T1 (n = 12) | 3.04 (±5.18) |  |
 T2–4 (n = 90) | 1.96 (±3.60) |  |
Lymph node metastasis |  | < 0.001 |
 Absent (n = 54) | 0.54 (±1.19) |  |
 Present (n = 48) | 3.83(±4.86) |  |
Tumor size | Â | 0.14 |
 ≥ 4 cm (n = 60) | 2.48 (±3.97) |  |
 < 4 cm (n = 42) | 1.53 (±3.51) |  |
Histology b | Â | 0.47 |
 Differentiated (n = 54) | 2.22 (±3.93) |  |
 Undifferentiated (n = 48) | 1.95 (±3.68) |  |
Lymphatic invasion | Â | 0.063 |
 Absent (n = 12) | 0.47 (±1.20) |  |
 Present (n = 90) | 2.30 (±3.97) |  |
Venous invasion | Â | 0.089 |
 Absent (n = 17) | 0.93 (±2.11) |  |
 Present (n = 85) | 2.32 (±4.02) |  |