Table 4. The difference of mast cell infiltration density before and after neo-adjuvant chemotherapy (N = 19).
| Neo-adjuvant chemotherapy | N | Average rank | Z | P |
|---|---|---|---|---|
| Before | 19 | 3.5 | -3.078 | 0.002 |
| After | 19 | 7.8 |
N, number of subjects in each group; Z, Z-value.
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