Figure 1.
Summary of the main results by: age group (upper left), sleep quality (upper right), sleep hygiene awareness (lower left) and diurnal preference (lower right).
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.