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Table 2 Risk variables for regional lymph nodes metastasis determined by univariate and multivariate logistic regression analyses

From: Nomogram for predicting preoperative regional lymph nodes metastasis in patients with metaplastic breast cancer: a SEER population-based study

Characteristics

Univariate analysis

Multivariate analysis

OR

P value

95% CI

OR

P value

95% CI

Age (years)

 ≤ 60

Reference

  

Reference

  

 > 60

0.82

0.096

0.65–1.04

0.85

0.199

0.66–1.09

Race

 White

Reference

  

Reference

  

 Black

1.16

0.335

0.86–1.57

0.98

0.883

0.71–1.35

 Othersa

1.25

0.325

0.80–1.95

1.12

0.639

0.70–1.78

Marital status

 Unmarried

Reference

  

Reference

  

 Married

0.73

0.010

0.58–0.93

0.80

0.089

0.62–1.03

 Unknown

0.83

0.560

0.43–1.58

0.95

0.875

0.48–1.87

Grade

 I

Reference

  

Reference

  

 II

2.07

0.119

0.83–5.16

1.83

0.208

0.71–4.68

 III

3.65

0.003

1.56–8.54

2.69

0.026

1.12–6.46

 IV

4.36

0.003

1.63–11.63

3.05

0.031

1.10–8.45

Laterality

 Right

Reference

  

Reference

  

 Left

0.82

0.094

0.65–1.04

0.79

0.058

0.62–1.01

ER status

 Negative

Reference

  

Reference

  

 Positive

1.49

0.007

1.12–1.98

1.60

0.006

1.14–2.23

PR status

 Negative

Reference

  

Reference

  

 Positive

1.08

0.644

0.77–1.52

0.97

0.870

0.65–1.44

Tumor size

 ≤ 2 cm

Reference

  

Reference

  

 > 2 cm and ≤ 5 cm

2.39

< 0.001

1.68–3.39

2.19

< 0.001

1.54–3.13

 > 5 cm

6.10

< 0.001

4.18–8.91

5.51

< 0.001

3.74–8.11

  1. OR Odds ratios, CI Confidential interval, ER Estrogen receptor, PR progesterone receptor
  2. aIncludes: American Indian, native Alaskan and Asian, Pacific Islander
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