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Apnea-Hypopnea Index (REM): (Apneas with >= 2% oxygen desaturation threshold used and with or without arousal+ hypopneas with > 50% flow reduction and with >= 2% oxygen desaturation used and with or without arousal) / hours of REM sleep from type I polysomnography

rdimrem2p under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in CHAT variables

[(total number of apneas and hypopneas in rapid eye movement sleep (REM) associated with >= 2% desaturation) / (hours of rapid eye movement sleep (REM))]

Apnea-Hypopnea Index (REM): (Apneas with >= 3% oxygen desaturation threshold used and with or without arousal+ hypopneas with > 50% flow reduction and with >= 3% oxygen desaturation used and with or without arousal) / hours of REM sleep from type I polysomnography

rdimrem3p under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in CHAT variables

[(total number of apneas and hypopneas in rapid eye movement sleep (REM) associated with >= 3% desaturation) / (hours of rapid eye movement sleep (REM))]

Apnea-Hypopnea Index (REM): (Apneas with >= 4% oxygen desaturation threshold used and with or without arousal+ hypopneas with > 50% flow reduction and with >= 4% oxygen desaturation used and with or without arousal) / hours of REM sleep from type I polysomnography

rdimrem4p under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in CHAT variables

[(total number of apneas and hypopneas in rapid eye movement sleep (REM) associated with >= 4% desaturation) / (hours of rapid eye movement sleep (REM))]

Apnea-Hypopnea Index (REM): (Apneas with >= 5% oxygen desaturation threshold used and with or without arousal+ hypopneas with > 50% flow reduction and with >= 5% oxygen desaturation used and with or without arousal) / hours of REM sleep from type I polysomnography

rdimrem5p under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in CHAT variables

[(total number of apneas and hypopneas in rapid eye movement sleep (REM) associated with >= 5% desaturation) / (hours of rapid eye movement sleep (REM))]

Minimum oxygen saturation in NREM sleep from type I polysomnography

losao2nr under Sleep Monitoring/Polysomnography/Oxygen Saturation in CHAT variables

Lowest oxygen saturation (SaO2) in non-rapid eye movement sleep (NREM) [minimum (all oxygen saturation (SaO2) values in non-rapid eye movement sleep (NREM))]

Minimum oxygen saturation in REM sleep from type I polysomnography

losao2r under Sleep Monitoring/Polysomnography/Oxygen Saturation in CHAT variables

Lowest oxygen saturation (SaO2) in rapid eye movement sleep (REM) [minimum (all oxygen saturation (SaO2) values in rapid eye movement sleep (REM))]

Percentage of REM sleep among total sleep duration from type I polysomnography

timeremp under Sleep Monitoring/Polysomnography/Sleep Architecture in CHAT variables

Conventionally, total sleep duration would be called total sleep time (TST).Percent of sleep time in rapid eye movement sleep (REM) [100*(number of minutes scored as rapid eye movement sleep (REM)) / (Total Sleep Time (TST))] * 100

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Childhood Adenotonsillectomy Trial

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The Aging Slow Wave

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Article Citation McConnell, B. V., Kronberg, E., Teale, P. D., ...

Head measurement - eye socket

bizgotc under Anthropometry in CFS variables

PSG Quality Assessment: hours of usable EOG L

eogldur under Sleep Monitoring/Polysomnography/Signal Quality in CFS variables

Number of hours of usable signal from left eye (EOG) lead as assessed by scorer.

PSG Quality Assessment: hours of usable EOG R

eogrdur under Sleep Monitoring/Polysomnography/Signal Quality in CFS variables

Number of hours of usable signal from right eye (EOG) lead as assessed by scorer.

PSG Quality Assessment: Signal Quality (EOG L)

queogl under Sleep Monitoring/Polysomnography/Signal Quality in CFS variables

Overall quality of signal from left eye (EOG) lead during sleep as assessed by scorer.

PSG Quality Assessment: Signal Quality (EOG R)

queogr under Sleep Monitoring/Polysomnography/Signal Quality in CFS variables

Overall quality of signal from right eye (EOG) lead during sleep as assessed by scorer.

Scored sleep/wake only?

slewaou under Sleep Monitoring/Polysomnography/Signal Quality in SOF variables

Polysomnography (PSG) Quality Assessment: Unusual staging

unustgou under Sleep Monitoring/Polysomnography/Signal Quality in SOF variables

Scorer observed unusual sleep staging. This is noted when there is no sleep in any particular stage (eg. no rapid eye movement sleep (REM)).

Average oxygen saturation during NREM sleep from type II polysomnography

avsao2nh under Sleep Monitoring/Polysomnography/Oxygen Saturation in SHHS variables

The mean of all oxygen saturation (SaO2) values in epochs scored as stages other than rapid eye movement sleep (REM) (i.e., 1,2,3/4).

Average oxygen saturation during REM sleep from type II polysomnography

avsao2rh under Sleep Monitoring/Polysomnography/Oxygen Saturation in SHHS variables

The mean of all oxygen saturation (SaO2) values in epochs scored as stage REM (Rapid eye movement sleep).

Is the sleep latency reliability?

sleep_latency under Sleep Monitoring/Polysomnography/Signal Quality/SHHS1 in SHHS variables

0: Unreliable 1:Reliable

Polysomnography (PSG) Scoring Notes (Sleep Heart Health Study Visit One (SHHS1)): Rapid eye movement sleep (REM) Arousals (only) unreliable

staging7 under Sleep Monitoring/Polysomnography/Signal Quality/SHHS1 in SHHS variables

Polysomnography (PSG) Quality Assessment (Sleep Heart Health Study Visit Two (SHHS2)): Wake/Sleep Scoring unreliable

wakslepr under Sleep Monitoring/Polysomnography/Signal Quality/SHHS2 in SHHS variables

Scorer noted that there was a problem differentiating stage wake from stage sleep.

Total duration of REM sleep from type II polysomnography

timerem under Sleep Monitoring/Polysomnography/Sleep Architecture in SHHS variables

Total time scored as rapid eye movement sleep (REM) rounded to nearest minute

Percentage of total sleep duration in REM from type II polysomnography

timeremp under Sleep Monitoring/Polysomnography/Sleep Architecture in SHHS variables

The ratio of time in rapid eye movement sleep (REM) to total sleep time, expressed as a percentage.

Percentage of total sleep duration (i.e., total sleep time, TST) in REM from type I polysomnography

tstrem under Sleep Monitoring/Polysomnography/Sleep Architecture in MSP variables

The ratio of time in rapid eye movement sleep (REM) to total sleep time, expressed as a percentage.

Total Sleep Duration (REM): the interval between sleep onset time and lights on/out-bed time while the participant is in REM sleep from type I polysomnography

timerem under Sleep Monitoring/Polysomnography/Sleep Architecture in CCSHS variables

Total time scored as rapid eye movement sleep (REM) rounded to nearest minute