Multivariate survival analyses by Cox regression model in all samples, IDC group and IMPC group.

1RR: relative risk;2CI: confidence interval;3ER: estrogen receptor status (positive vs negative);4LN: lymph node status (positive lymph node vs negative lymph node);5LV: lymphovascular invasion (positive vs negative);6NS: no statistical significance;7Multifocal: primary lesion (multifocal vs solitary);8T stage: tumor size of primary lesion (T1 vs T2+).9IDC: invasive ductal carcinoma not otherwise specified;10IMPC: invasive micropapillary carcinoma.Multivariate survival analyses by Cox regression model in all samples, IDC group and IMPC group.