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.
Least squares means over time by group for (a) moderate-to-vigorous activity hours per day, (b) light activity hours per day, (c) sedentary time hours per day, (d) average hours awake after sleep onset per night, (e) sleep efficiency, or proportion of time in bed spent sleeping.
