Fig. 6.
Effects of polyphenols on sleep efficiency. This forest plot revealed that administration of polyphenols has no significant effects on sleep efficiency.
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.