Fig.2.
Time from perceived onset of cognitive decline to prAD: earlier versus later prAD. prAD, probable Alzheimer’s disease; CD, cognitive decline.
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.