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## Figure 4.
Cut-off calculations for predicting a pathological complete response (pCR) in the
group of HER2-positive patients. The continuous line represents the -lg of the P value for each respective cut-off point relative to the percentage of Ki67-positive
stained tumor cells. The dashed line represents the proportion of patients with a
pCR in the group of patients with the higher Ki67 values for each cut-off. The gray
background indicates the area for which cut-offs with a significance level of 0.05
is reached. For the maximum of each -lg (P value), the sample size and pCR rates are provided in the figure.
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