Table 2. The distribution difference of mast cell sorted by clinical and molecular factors.
| Variable | N | Average rank | Z | P |
|---|---|---|---|---|
| Age, year | ||||
| < 50 | 88 | 133.9 | -4.589 | <0.001 |
| ≥ 50 | 131 | 93.9 | ||
| Max diameter of cancer (cm) | ||||
| ≤ 2.0 | 101 | 112.7 | 0.335 (χ2) | 0.846 |
| 2.0 - 5.0 | 111 | 107.7 | ||
| > 5.0 | 7 | 108.4 | ||
| Histological type | ||||
| Invasive ductal carcinoma | 210 | 107.9 | -2.322 | 0.020 |
| Invasive lobular carcinoma | 9 | 157.9 | ||
| Lymph node metastasis | ||||
| Yes | 128 | 108.7 | -3.530 | 0.724 |
| No | 91 | 111.8 | ||
| ER | ||||
| Negative | 72 | 91.4 | -3.052 | 0.002 |
| Positive | 147 | 119.1 | ||
| PR | ||||
| Negative | 76 | 95.3 | -2.508 | 0.012 |
| Positive | 143 | 117.8 | ||
| HER-2 | ||||
| Negative | 167 | 111.9 | -0.807 | 0.420 |
| Positive | 52 | 103.8 | ||
| Ki67 | ||||
| ≤ 14% | 49 | 132.8 | -2.861 | 0.004 |
| > 14% | 170 | 103.4 | ||
| Molecular typing | ||||
| Luminal A | 39 | 133.8 | 13.423(χ2) | 0.004 |
| Luminal B | 95 | 112.8 | ||
| HER-2 overexpression | 53 | 105.9 | ||
| ER-, PR- and HER-2- | 32 | 79.4 | ||
Abbreviations: ER+, estrogen receptor positive; PR+, progesterone receptor positive; HER-2+, human epidermal growth factor receptor-2 positive; Ki67, Ki67 nuclear antigen; N, number of subjects in each group; Z, Z-value.