Fig. 3

ROC curve analysis for prediction of no ALN metastasis in training group (a), prediction of positive ALN metastasis in training group (b), prediction of four or more ALN metastasis in training group (c), prediction of no ALN metastasis in validation group (d), prediction of positive ALN metastasis in validation group (e), prediction of four or more ALN metastasis in validation group f. Abbreviations: ROC = Receiver operating characteristic, ALN = axillary lymph node