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.
Annual hazard rates of breast cancer death (percentage of breast cancer dying per year among women living with the disease) are plotted against years since diagnosis for black women (orange) and white women (blue) for two calendar periods: 1990–1996 (broken lines) and 1997–2004 (solid lines). A) Hazard rates among case subjects with estrogen receptor–negative (ER−) tumors. B) Hazard rates among case subjects with estrogen receptor–positive (ER+) tumors.
