Table 2 Multivariable logistic regression analysis of breast cancer recurrence score (RS) ≥ 26

Race

 Non-Hispanic White

Reference

 Hispanic White

0.93

0.86–1.00

0.04

 Black

1.19

1.12–1.26

 < 0.001

 Asian/Pacific Islander

1.03

0.95–1.13

0.45

Age

  < 50 years

Reference

 50 years or older

1.05

1.00–1.10

0.06

Facility

 Nonacademic

Reference

 Academic

0.98

0.94–1.01

0.19

Insurance

 None

Reference

 Private

1.02

0.88–1.19

0.82

 Government

0.97

0.84–1.14

0.74

Income

 Above median

Reference

 Below median

1.1

1.05–1.16

 < 0.001

Education

 Above median

Reference

 Below median

1.04

0.99–1.08

0.12

CDS

 0

Reference

 1

1.02

0.97–1.07

0.41

 2 + 

1.09

0.99–1.20

0.08

Year

 For every 1 year increase

0.98

0.97–0.99

 < 0.001

Histology

 Ductal or lobular carcinoma

Reference

 Other

0.74

0.70–0.78

 < 0.001

PR

 Positive

Reference

 Negative

6.59

6.31–6.89

 < 0.001

T staging

 1

Reference

 2

1.31

1.26–1.36

 < 0.001

 3

0.8

0.68–0.92

0.003

N staging

 0

Reference

 1a

0.8

0.76–0.85

 < 0.001

Grade

 1

Reference

 2

2.75

2.60–2.91

 < 0.001

 3

16.98

16.02–18.02

 < 0.001

 Other

21.15

13.28–33.64

 < 0.001

LVSI

 No

Reference

 Yes

1.22

1.16–1.28

 < 0.001