Kaplan–Meier disease-free survival by different chemotherapy regimens. (A) all population, anthracycline-based and Taxane-based regimens were superior to classical cyclophosphamide, methotrexate, and 5-fluorouracil (5FU) (CMF) regimens for disease-free survival (DFS) in all populations, there was no difference between anthracycline-based and Taxane-based regimens (P = 0.026); (B) luminal A, there was no difference among three regimens (P = 0.095); (C) luminal B (high Ki-67); (D) luminal B (Her2/neu+); (E) Her2/neu+, anthracycline-based and Taxane-based regimens were superior to classical CMF regimens for DFS in luminal B (whether high Ki-67 or Her2/neu, also Her2/neu, P = 0.001), but there was no difference between anthracycline-based and Taxane-based regimens (P = 0.126); (F) triple negative breast cancer (TNBC), there was no difference among all three regimens (P = 0.089).