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.
Spline curve of the association between log digital pulse propagation index and all-cause mortality (a), cardiovascular mortality (b), and heart failure with reduced ejection fracture (c) after adjustment for heart rate. The gray area represents the 95% confidence interval of the hazard ratio.
