Table 2 Univariate and multivariate analyses of disease-free survival

Age

 <35

1

1

 ≥35

0.618

0.476-0.803

<0.001^*

0.679

0.522-0.883

0.004^*

Menopause

 Premenopause

1

—

 Postmenopause

0.995

0.822-1.205

0.960

—

pT stage

 T1

1

1

 T2

1.699

1.361-2.120

<0.001^*

1.361

1.088-1.704

0.007^*

 T3

2.844

2.036-3.972

<0.001^*

1.585

1.116-2.252

0.010^*

 T4

3.150

1.933-5.134

<0.001^*

1.798

1.091-2.963

0.021^*

pN stage

 N0

1

1

 N1

2.187

1.746-2.740

<0.001^*

2.083

1.658-2.616

<0.001^*

 N2

3.139

2.322-4.244

<0.001^*

2.506

1.817-3.456

<0.001^*

 N3

6.725

5.236-8.638

<0.001^*

4.575

3.315-6.313

<0.001^*

ER

 Negative

1

1

 Positive

0.586

0.504-0.682

<0.001^*

0.720

0.582-0.892

0.003^*

PR

 Negative

1

1

 Positive

0.620

0.533-0.722

<0.001^*

0.790

0.636-0.980

0.032^*

Her2

 Negative

1

—

 Positive

0.977

0.871-1.096

0.693

—

Number of NLNs (continuous variable)

0.913

0.896-0.930

<0.001^*

0.977

0.958-0.997

0.022^*