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.
Bland-Altmann plots for sleep efficiency (%) for the Basis, Fitbit, Misfit, Withings, and Actiwatch compared to PSG (adjusted values). The x-axis is the mean of the two devices, and the y-axis represents PSG minus the device. Dotted line represents two standard deviations from the mean.
