| BC | breast cancer |
| BMI | body mass index, kg/m2 |
| CI | confidence interval |
| ER | estrogen receptor |
| HER2 | human epidermal growth factor receptor 2 |
| HR | hazard ratio |
| OR | odds ratio |
| PA | physical activity |
| PR | progesterone receptor |
| SD | standard deviation |
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.