Table 3 Univariate and multivariate analyses of DFS in MBC

Age ≤ 50

1.57(0.62–4.00)

0.34

Premenopausal

1.14(0.49–2.88)

0.79

T(T3 + T4)

4.37(1.39–13.69)

0.01

1.49(0.31–7.11)

0.62

LN(positive)

7.40(2.77–19.82)

 < 0.01

3.98(1.05–15.12)

0.04

M(M1)

12.48(2.62–59.44)

 < 0.01

2.19(0.30–16.25)

0.44

AJCC stage(III + IV)

7.83(3.07–19.95)

 < 0.01

2.30(0.61–8.69)

0.22

Subtype(TN-MBC)

0.60(0.20–1.83)

0.37

Chemotherapy (yes)

2.29(0.30–17.15)

0.42

Radiotherapy (yes)

2.38(0.88–6.45)

0.88

Endocrine therapy (yes)

0.95(0.13–7.18)

0.96

Operation (BCS)

0.55(0.13–2.40)

0.43

Operation (SLNB)

0.52(0.19–1.41)

0.20