Actigraphy, a method for inferring sleep/wake patterns based on movement data gathered
using actigraphs, is increasingly used in population-based epidemiologic studies because
of its ability to monitor activity in natural settings. Using special software, actigraphic data are
analyzed to estimate a range of sleep parameters. To date, despite extensive application of
actigraphs in sleep research, published literature specifically detailing the methodology for
derivation of sleep parameters is lacking; such information is critical for the appropriate …

Purpose This study aimed to investigate sleep parameters and to identify differences
according to respiratory support therapy, sedation, and pain medication in intensive care
unit (ICU) patients. Methods In this observational study, sleep parameters were measured
using actigraphy. We observed 45 sleep events in 30 ICU patients receiving respiratory
support therapy. We measured the sleep parameters, time, efficiency, and wakefulness after
sleep onset (WASO). The differences in sleep parameters according to the respiratory …