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Table 2 Multivariable logistic regression analysis for factors associated with use of adjuvant chemotherapy (Number of patients included in the regression analysis = 1064 [87.8%])

From: A cohort study of ethnic differences in use of adjuvant chemotherapy and radiation therapy for breast cancer in New Zealand

Characteristic

OR

95% CI

p

Māori ethnicitya

1.02

0.90-1.14

0.934

Ageb

0.92

0.91-0.94

<0.001

Year of diagnosisc

0.94

0.88-1.02

0.122

ER and/or PR positived

0.34

0.21-0.57

<0.001

Deprivatione

0.98

0.87-1.11

0.733

Charlson score

0.34

0.17-0.60

<0.001

Surgery in public vs. private

1.07

0.77-1.49

0.688

T stagef

   

 T 2

1.58

1.12-2.23

0.009

 T 3

1.47

0.65-2.49

0.486

 T 4

1.23

0.41-3.41

0.876

N stageg

   

 N 1

2.49

1.71-3.64

<0.001

 N 2+

8.41

4.37-16.2

<0.001

Gradeh

   

 Grade II

2.41

1.58-3.70

<0.001

 Grade III

4.79

2.87-7.99

<0.001

LVIi

1.78

1.22-2.61

<0.001

HER-2j

   

 HER-2 Equivocal

0.55

0.26-1.15

0.116

 HER-2 Positive

2.02

1.23-3.33

0.006

 HER-2 Unknown

1.36

0.83-2.24

0.548

  1. aMaori compared with NZ European ethnicity
  2. bAge as a continuous variable
  3. cYear of diagnosis as a continuous variable
  4. dER and/or PR positive compared with ER & PR negative
  5. eDeprivation as a continuous variable
  6. fReference category T1 stage
  7. gReference category N0 stage
  8. hReference category Grade I
  9. iReference category LVI negative
  10. jReference category HER-2 negative