Table 2.
Comparison of Breast Cancer–Specific Mortality, Non–Breast Cancer, and All-Cause Mortality, Stratified by Ethnicity and Body Mass Index
| |
|
|
BMI (kg/m2) at interview |
|
||
|---|---|---|---|---|---|---|
| No. of events | Na | ≤24.9Reference | 25–29.9HR (95% CI) | ≥30HR (95% CI) | ptrend | |
| Mortality, age-adjusted | ||||||
| Breast cancer-specific | ||||||
| Non-Hispanic white | 62 | 297 | 1.00 | 1.02 (0.53, 1.94) | 1.97 (0.99, 3.91) | 0.09 |
| Hispanic | 66 | 279 | 1.00 | 0.68 (0.36, 1.27) | 0.90 (0.47, 1.73) | 0.72 |
| All-cause mortality | ||||||
| Non-Hispanic white | 109 | 298 | 1.00 | 0.97 (0.60, 1.56) | 1.79 (1.04, 3.07) | 0.02 |
| Hispanic | 106 | 279 | 1.00 | 0.83 (0.51, 1.38) | 1.26 (0.76, 2.10) | 0.06 |
| Non–breast cancer | ||||||
| Non-Hispanic white | 47 | 297 | 1.00 | 0.94 (0.46, 1.89) | 1.49 (0.58, 3.81) | 0.04 |
| Hispanic | 40 | 279 | 1.00 | 1.25 (0.52, 3.00) | 2.35 (0.99, 5.62) | 0.53 |
| Mortality, fully adjusted | ||||||
| Breast cancer–specificb | ||||||
| Non-Hispanic white | 59 | 279 | 1.00 | 0.98 (0.49, 1.96) | 2.07 (0.98, 4.35) | 0.09 |
| Hispanic | 61 | 254 | 1.00 | 0.81 (0.41, 1.60) | 1.32 (0.64, 2.74) | 0.50 |
| All-cause mortalityc | ||||||
| Non-Hispanic white | 101 | 284 | 1.00 | 1.02 (0.62, 1.69) | 2.12 (1.15, 3.90) | 0.03 |
| Hispanic | 100 | 265 | 1.00 | 0.87 (0.51, 1.48) | 1.23 (0.71, 2.12) | 0.47 |
| Non–breast cancerc | ||||||
| Non-Hispanic white | 41 | 283 | 1.00 | 1.02 (0.46, 2.26) | 2.65 (0.90, 7.81) | 0.15 |
| Hispanic | 37 | 265 | 1.00 | 1.73 (0.63, 4.77) | 2.18 (0.77, 6.10) | 0.15 |
a
Number of cases included in models, one case was excluded from breast cancer–specific and non–breast cancer mortality due to unconfirmed death.
b
HRs adjusted for BMI at age 18, total METs, duration of estrogen use, breast cancer stage, total daily energy intake, and post–breast cancer diagnosis.
c
HRs adjusted for age, history of high blood pressure, history of stroke, smoking status, total METs, and total daily energy intake.
HR, hazard ratio; CI, confidence interval.