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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