Software
© 2016 Pulsar Informatics, Inc.
Page 23 of 26
Wake after sleep period (WASP)
– The length of time spent awake in bed
between the final awakening and out of bed. Unknown epochs are not
included in the WASP.
WASP = Sum of all epochs scored as wake between the end of the final
sleep epoch and the end of the in bed period.
Wake after sleep onset (WASO)
– The total length of time spent awake in
bed between sleep onset and the final awakening.
WASO = Sum of all epochs scored as wake that are not classified as
SleepLatency or WASP.
Unknown Time
– The total length of time within the in bed period in which
the data in excluded form analysis and the state is unknown.
Total Sleep Time (TST)
– The total length of time asleep while in bed,
calculated by the sum of all sleep periods.
TST = Sum of all epochs scored as wake within the InBed interval.
Time In Bed (TIB)
– The length of time in bed, as calculated.
TIB = Difference between the Out of Bed time and In Bed time.
Sleep Efficiency
– The percentage of time spent asleep while in bed.
Sleep efficiency% = TST/(TIB – Unknown) * 100.
Awakenings
– The total number of wake periods that interrupted sleep
periods, excluding the final awakening.
Avg. Awakening
– The average duration of all the wake periods that
interrupted sleep periods, excluding the final awakening.
Bed time
– The time of the start of the in bed interval. The In Bed time.
Get Up time
– The time at which the bed interval ended. The Out of bed
time.
The following are some equality conditions that will hold for these variables:
Total time awake in bed = Sleep L WASO + WASP
TIB = SleepL WASO + WASP + TST = Unknown
