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.
Performance of the Health ABC HF model in sex- and race subgroups. Predicted and observed heart failure probabilities across categories of predicted risk; error bars for observed heart failure probabilities represent 95% confidence interval.
