Table 3 Univariate and multivariate logistic regression analysis for non-SLN metastasis

Age

 ≤ 50

1

1

 > 50

0.86 (0.54, 1.37)

0.5243

0.85 (0.36, 2.01)

0.7172

BMI

  ≤ 25

1

1

 > 25

0.79 (0.47, 1.33)

0.3786

0.73 (0.38, 1.40)

0.345

Tumor size (cm)

  ≤ 2

1

1

 > 2

1.93 (1.15, 3.22)

0.0126 *

1.22 (0.65, 2.27)

0.5308

Histological stage

 Negative

1

1

 Positive

0.65 (0.28, 1.54)

0.3275

1.21 (0.43, 3.39)

0.7196

Ki-67

 Negative

1

1

 Positive

1.34 (0.79, 2.28)

0.2774

1.05 (0.53, 2.11)

0.8822

HER2

 Negative

1

1

 Positive

2.05 (1.16, 3.63)

0.0134 *

2.25 (1.10, 4.60)

0.0269 *

ER

 Negative

1

1

 Positive

1.02 (0.54, 1.91)

0.9615

1.23 (0.40, 3.76)

0.7127

PR

 Negative

1

1

 Positive

1.05 (0.62, 1.78)

0.8612

1.29 (0.51, 3.26)

0.5919

LVI

 Negative

1

1

 Positive

6.11 (3.62, 10.32)

 < 0.0001 *

6.08 (3.31, 11.14)

 < 0.0001 *

Number SLNM

 1

1

1

  > 1

4.50 (2.72, 7.46)

 < 0.0001 *

4.17 (2.35, 7.42)

 < 0.0001 *

Menopause

 No

1

1

 Yes

0.96 (0.60, 1.55)

0.8742

1.69 (0.72, 4.00)

0.2296