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.
Data points represent a subject on one night of measurement (4-8 data points per subject). In this graph, accuracy (i.e., percentage of epochs on which PSG and actigraphy are in agreement) declined as PSG sleep efficiency declined in all except one participant.
