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Apnea-Hypopnea Index (REM): Apneas with >= 3% oxygen desaturation and with or without arousal+ hypopneas with > 30% flow reduction and with >= 3% oxygen desaturation and with or without arousal / hour of REM sleep from type II polysomnography

rdirem3p under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in SHHS variables

Calculated - Summary metric of sleep disordered breathing events

Apnea-Hypopnea Index (REM): Apneas with >= 4% oxygen desaturation and with or without arousal+ hypopneas with > 30% flow reduction and with >= 4% oxygen desaturation and with or without arousal / hour of REM sleep from type II polysomnography

rdirem4p under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in SHHS variables

Calculated - Summary metric of sleep disordered breathing events

Apnea-Hypopnea Index (REM): Apneas with >= 5% oxygen desaturation and with or without arousal+ hypopneas with > 30% flow reduction and with >= 5% oxygen desaturation and with or without arousal / hour of REM sleep from type II polysomnography

rdirem5p under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in SHHS variables

Calculated - Summary metric of sleep disordered breathing events

Hypopnea Index (REM, Non-Supine): (Hypopneas with > 30% flow reduction and with no oxygen desaturation threshold used and with arousal only) / hour of REM sleep in non-supine position from type II polysomnography

rdiroa under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in SHHS variables

Calculated - Summary metric of sleep disordered breathing events

Hypopnea Index (REM, Non-Supine): (Hypopneas with > 30% flow reduction and with >= 2% oxygen desaturation or with arousal) / hour of REM sleep in non-supine position from type II polysomnography

rdiroa2 under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in SHHS variables

Calculated - Summary metric of sleep disordered breathing events

Hypopnea Index (REM, Non-Supine): (Hypopneas with > 30% flow reduction and with >= 3% oxygen desaturation or with arousal) / hour of REM sleep in non-supine position from type II polysomnography

rdiroa3 under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in SHHS variables

Calculated - Summary metric of sleep disordered breathing events

Hypopnea Index (REM, Non-Supine): (Hypopneas with > 30% flow reduction and with >= 4% oxygen desaturation or with arousal) / hour of REM sleep in non-supine position from type II polysomnography

rdiroa4 under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in SHHS variables

Calculated - Summary metric of sleep disordered breathing events

Hypopnea Index (REM, Non-Supine): (Hypopneas with > 30% flow reduction and with >= 5% oxygen desaturation or with arousal) / hour of REM sleep in non-supine position from type II polysomnography

rdiroa5 under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in SHHS variables

Calculated - Summary metric of sleep disordered breathing events

Hypopnea Index (REM, Non-Supine): (Hypopneas with > 30% flow reduction and with no oxygen desaturation threshold used and with or without arousal) / hour of REM sleep in non-supine position from type II polysomnography

rdirop under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in SHHS variables

Calculated - Summary metric of sleep disordered breathing events

Hypopnea Index (REM, Non-Supine): (Hypopneas with > 30% flow reduction and with >= 2% oxygen desaturation and with or without arousal) / hour of REM sleep in non-supine position from type II polysomnography

rdirop2 under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in SHHS variables

Calculated - Summary metric of sleep disordered breathing events

Hypopnea Index (REM, Non-Supine): (Hypopneas with > 30% flow reduction and with >= 3% oxygen desaturation and with or without arousal) / hour of REM sleep in non-supine position from type II polysomnography

rdirop3 under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in SHHS variables

Calculated - Summary metric of sleep disordered breathing events

Hypopnea Index (REM, Non-Supine): (Hypopneas with > 30% flow reduction and with >= 4% oxygen desaturation and with or without arousal) / hour of REM sleep in non-supine position from type II polysomnography

rdirop4 under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in SHHS variables

Calculated - Summary metric of sleep disordered breathing events

Hypopnea Index (REM, Non-Supine): (Hypopneas with > 30% flow reduction and with >= 5% oxygen desaturation and with or without arousal) / hour of REM sleep in non-supine position from type II polysomnography

rdirop5 under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in SHHS variables

Calculated - Summary metric of sleep disordered breathing events

Arousal Index (REM, Supine): Arousals per hour of REM sleep in supine position from type II polysomnography

ahrembp under Sleep Monitoring/Polysomnography/Arousals in SHHS variables

Arousal Index (REM, Non-Supine): Arousals per hour of REM sleep in non-supine position from type II polysomnography

ahremop under Sleep Monitoring/Polysomnography/Arousals in SHHS variables

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).

Polysomnography (PSG) Scoring Notes (Sleep Heart Health Study Visit One (SHHS1)): rapid eye movement sleep (REM)/non-rapid eye movement sleep (NREM) unreliable

staging2 under Sleep Monitoring/Polysomnography/Signal Quality/SHHS1 in SHHS variables

Polysomnography (PSG) Scoring Notes (Sleep Heart Health Study Visit One (SHHS1)): Scored Wake, non-rapid eye movement sleep (NREM), rapid eye movement sleep (REM) only

staging3 under Sleep Monitoring/Polysomnography/Signal Quality/SHHS1 in SHHS variables

Polysomnography (PSG) Quality Assessment (Sleep Heart Health Study Visit Two (SHHS2)): Unusual Staging

unustgou under Sleep Monitoring/Polysomnography/Signal Quality/SHHS2 in SHHS 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)).

REM Sleep Latency: the interval between the first sleep epoch and REM sleep excluding wake from type II polysomnography

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

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.

REM Sleep Latency: the interval between the first sleep epoch and REM sleep including wake

nsrr_ttlprdsp_s1sr under Harmonized/Polysomnography/Sleep Architecture in APPLES variables

Harmonized by the NSRR team. Source: :soremfsopsg:

Oxygen Desaturation Index (REM): Oxygen desaturation associated with respiratory events per hour of REM sleep from type I polysomnography

desatindexrem under Sleep Monitoring/Polysomnography/Oxygen Saturation in APPLES variables

Apnea-Hypopnea Index (REM): (All apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 50% flow reduction and without oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with >= 3% oxygen desaturation or with arousal) / hour of REM sleep from type I polysomnography

rdirempsg under Sleep Monitoring/Polysomnography/Respiratory Event Counts in APPLES variables