Sleep Calculations
Terms
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Time in bed
or Total recording time - Lights on-Lights out= ____/2
- Total Sleep Time
- Total # of sleep epochs=____/2
- Total Wake Time
- Total wake epochs=______/2
- Sleep Efficiency
- Total sleep time (in minutes)/Total Recording Time (in minutes) x 100
- Sleep Latency
- Sleep onset-Lights out/2
- REM Latency
- Rem Onset-Sleep Onset/2
- Total Stage Sleep
- Total Sleep Stage/2
- % Sleep Stage
- Total Stage (min)/ TST (min) X 100
- Total REM Sleep
- Total # of REM epochs/2
- Total NREM Sleep
- Total NREM epochs/2
- Total position Time
- Total of epochs of specific position/2
- Apnea Index
- Total apneas/TST x 60
- Hypopnea Index
- Total Hypopneas/tst x 60
- RDI
- Total apneas and hypopneas/tst x 60
- RDI on Back
- Total apneas and hypopneas on back/Total Back Time x 60
- RDI on Side
- Total apneas and hypopneas on side/ Total Side time X 60
- RDI on Prone
- Total apneas and hypopneas on Prone/Total Prone Time X 60
- RDI in REM
- Total apneas and hypopneas in rem/Total rem time X 60
- RDI in NREM
- Total apneas and hypopneas in nrem/Total nrem time X 60
- Arousal Index
- Total # of arousals/ TST X 60
- Arousal Index on Back
- Total arousals on back/ Total Back Time X 60
- Arousal Index on Side
- Total arousals on side/ Total side time x 60
- Arousal index in REM
- Total arousals in REM/Total REM time X 60
- Arousal Index in NREM
- Total arousals in NREM/Total NREM Time X 60.
- PLM Index
- Total PLM's/Total Sleep Time X 60
- PLM with arousal Index
- Total PLM's with arousals/ TST X 60