Table 2 Multivariate logistic regression analysis for predicting axillary lymph node metastasis with the assigned points

AJCC stage

 I

reference

-

-

0

 II

2.28 (0.75 ~ 7.27)

0.151

0.825

1.0

 III

37,836,559.51 (0 ~ NA)

0.988

17.448

17.5

 IV

9,984,898.98 (0 ~ NA)

0.989

16.116

16.0

T stage

 T1

reference

-

-

0

 T2

3.11 (1.3 ~ 8)

0.014

1.359

1.0

 T3

27,337,664.44 (0 ~ NA)

0.990

17.123

17.0

 T4

8.59 (0.83 ~ 205.36)

0.097

2.150

2.0

ER

 Negative

reference

-

-

0

 Positive

10,968,914.8 (0 ~ NA)

0.989

16.21

16.0

HER-2

 Negative

reference

-

-

0

 Positive

0.25 (0.07 ~ 0.84)

0.310

-1.388

-1.5

Maximum tumor diameter category (cm)

  < 3.55

reference

-

-

0

  ≥ 3.55

3.17 (1.26 ~ 8.45)

0.017

1.154

1.0

K_ep category (min⁻¹)

  < 0.982

reference

-

-

0

  ≥ 0.982

2.50 (0.98 ~ 6.66)

0.059

0.918

1.0

V_e category

  < 0.253

reference

-

-

0

  ≥ 0.253

0.52 (0.24 ~ 1.13)

0.101

-0.652

-0.5

TTP category (min)

  < 0.778

reference

-

-

0

  ≥ 0.778

3.23 (1.27 ~ 8.74)

0.017

1.176

1.0