Crude modela | Multivariable-adjusted modelb | |||
---|---|---|---|---|
HR | (95% CI) | HR | (95% CI) | |
Age at index breast cancer, years | ||||
<55 | Reference | Reference | ||
55–64 | 3.41 | (2.12–5.48) | 3.69 | (2.04–6.67) |
65–74 | 4.34 | (2.73–6.89) | 5.08 | (2.85–9.06) |
75+ | 2.75 | (1.63–4.62) | 2.70 | (1.39–5.24) |
P trend | <0.001 | 0.001 | ||
Race/ethnicity | ||||
Non-Hispanic White | Reference | Reference | ||
Black | 1.33 | (0.92–1.91) | 1.38 | (0.86–2.24) |
Asian/Pacific Islander/Alaska Native | 0.55 | (0.25–1.20) | 0.47 | (0.19–1.18) |
Hispanic | 0.93 | (0.51–1.70) | 0.77 | (0.33–1.78) |
Breast cancer AJCC stage | ||||
I | Reference | Reference | ||
II | 0.85 | (0.64–1.13) | 1.10 | (0.69–1.73) |
III | 0.64 | (0.43–0.97) | 0.84 | (0.41–1.72) |
Hormone receptor status | ||||
ER/PR negative | Reference | Reference | ||
ER and/or PR positive | 1.29 | (0.57–2.93) | 2.41 | (0.76–7.63) |
Tumor size | ||||
<2 cm | Reference | Reference | ||
≥2 cm | 0.75 | (0.54–1.03) | 0.69 | (0.43–1.10) |
Lymph node status | ||||
Negative | Reference | Reference | ||
Positive | 0.73 | (0.56–0.95) | 0.73 | (0.46–1.16) |
Radiation | ||||
No | Reference | Reference | ||
Yes | 0.96 | (0.71–1.29) | 1.14 | (0.78–1.67) |