Skip to main content

Table 3 Subgroup analysis: breast cancer specific deaths by 10 years by BMI group and other factors

From: Obesity and breast cancer outcomes in chemotherapy patients in New Zealand – a population-based cohort study

  BMI <24 BMI 25-29.9 BMI 30+ P value
  Total No. 331 349 369  
Deaths 10 years, %
All patients 19.0 15.8 19.8 P value
Age <40 132 20.0 38.0 20.0 0.1
40-59 678 18.2 10.9 19.7 0.02
60+ 239 29.2 35.4 35.4 0.9
Menopause Pre-menopause 474 16.2 16.0 18.5 0.8
Peri-menopause 65 6.3 13.6 11.1 0.8
Post-menopause 506 23.9 15.9 22.3 0.2
Ethnicity* Maori 194 26.8 21.3 24.5 0.8
NZ European 793 18.7 15.6 17.3 0.6
Stage 1, 2 684 8.9 9.9 8.4 0.9
3, 4 365 40.2 27.6 38.0 0.1
Detection Screen detected 303 12.2 11.1 11.6 0.9
Symptomatic 746 21.0 18.1 23.4 0.4
Receptors ER+, PR+ 515 13.0 12.1 14.4 0.8
ER-, PR- 270 15.8 13.6 22.2 0.3
+/- 238 30.1 25.0 27.7 0.7
Systemic treatment Chemo only 338 33.0 24.1 32.8 0.2
Chemo + hormonal 711 12.4 11.6 13.8 0.8
Surgery Breast conserving surgery 496 14.2 11.4 9.9 0.5
Mastectomy 509 20.4 16.4 24.1 0.2
Radiotherapy RT 830 18.0 13.7 16.1 0.4
no RT 175 22.4 23.6 37.5 0.09
Health sector Public 672 22.2 16.4 20.4 0.3
Private 377 15.1 14.9 17.8 0.8
  1. *Notes: Ethnicity: Pacific, Asian, Other, too few for separate assessment
  2. P values from chi square value for each subgroup