User Manual

2-11
Sleep Intervals
Data in these intervalsrepresentperiodsoftimeinwhichthesubjectislikelyto
be asleep. These intervals are created automatically by the program once a Rest
Interval has been set. They represent the period of time between Sleep Onset and
Sleep End but are not indicated by any shading.
Active Intervals
Dataintheseintervalsrepresentperiodsoftimeinwhichsubjectactivity
indicates that they are alert and engaged in physical activity. These intervals
contain all those data that are outside of Rest Intervals. Active Intervals are
created automatically when Rest Intervals are set. No shading is used to indicate
these intervals.
Excluded Intervals
Data in these intervals are excluded from all analytical calculations. These
intervalsaredesignedforusewhensubjectsremovetheActiwatchorforother
invalid periods of data. These must be set by the user and are indicated by dark
blue shading.
Custom Intervals
These are intervals of data that are of some interest for any reason. Typically
these are used for illuminance calculations when using an Actiwatch-L or
numerical rating scale values when using the Actiwatch Score. They may also be
used for assessing activity during specific periods of the day. They are indicated
on the Actogram by a blue bar above the activity data, and must be set by the
user.
Forced Wake
These intervals are periods of time for which the Sleep/Wake score has been
forcedbytheusertoWake.Thisistypicallyusedifthesubjectisknowntobe
awake, but very inactive, or as an alternative to excluding data. Epochs included
in this type of interval are indicated by a magenta mark below the X axis of the
Actogram.
Forced Sleep
These intervals are periods of time for which the Sleep/Wake score has been
forcedbytheusertoSleep.Thistypicallyisusedifthesubjectisknownto
be sleeping but there is significant movement. Epochs included in this type of
interval are indicated by a gray mark below the X axis of the Actogram.
Note: Custom, Excluded, Forced Wake and Forced Sleep intervals can
be overlapped. However, due to the automatic creation of Sleep intervals,
Rest intervals cannot be overlapped. If you attempt to overlap Rest
intervals, they will be combined into one interval.