rdi - Search - Sleep Data - National Sleep Research Resource

rdi0ou under Sleep Monitoring/Polysomnography/Signal Quality in CFS variables

If RDI = 0, scorer has verified that this value is real.

Polysomnography (PSG) Quality Assessment: Respiratory Disturbance Index (RDI)=0 real

rdi0ou under Sleep Monitoring/Polysomnography/Signal Quality in SOF variables

If Respiratory Disturbance Index (RDI) = 0, scorer has verified that this value is real.

Polysomnography (PSG) Quality Assessment (Sleep Heart Health Study Visit Two (SHHS2)): Respiratory Disturbance Index (RDI)=0 real

rdi0ou under Sleep Monitoring/Polysomnography/Signal Quality/SHHS2 in SHHS variables

If Respiratory Disturbance Index (RDI) = 0, scorer has verified that this value is real.

Sleep Study: preliminary RDI

prelmrdi under Sleep Monitoring/Home Sleep Test in CFS variables

A subset of participants had home sleep test (Edentec) as well as in-lab polysomnography at visit 5.

Apnea-Hypopnea Index: Apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and with no oxygen desaturation used and with or without arousal / hour of sleep from type II polysomnography

pordi0p under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in MROS variables

Overall RDI at 0% desaturation

Apnea-Hypopnea Index: Apneas with no oxygen desaturation threshold used or with arousal+ hypopneas with > 30% flow reduction and with no oxygen desaturation used or with arousal / hour of sleep from type II polysomnography

pordi0pa under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in MROS variables

Overall RDI at 0% desaturation or arousal

Apnea-Hypopnea Index: Apneas with >=2% oxygen desaturation and with or without arousal+ hypopneas with > 30% flow reduction and >=2% oxygen desaturation and with or without arousal / hour of sleep from type II polysomnography

pordi2p under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in MROS variables

Overall RDI at 2% desaturation

Apnea-Hypopnea Index: Apneas with >=2% oxygen desaturation or with arousal+ hypopneas with > 30% flow reduction and >=2% oxygen desaturation or with arousal / hour of sleep from type II polysomnography

pordi2pa under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in MROS variables

Overall RDI at 2% desaturation or arousal

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

pordi3p under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in MROS variables

Overall RDI at 3% desaturation

Apnea-Hypopnea Index: Apneas with >=3% oxygen desaturation or with arousal+ hypopneas with > 30% flow reduction and >=3% oxygen desaturation or with arousal / hour of sleep from type II polysomnography

pordi3pa under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in MROS variables

Overall RDI at 3% desaturation or arousal

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

pordi4p under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in MROS variables

Overall RDI at 4% desaturation

Apnea-Hypopnea Index: Apneas with >=4% oxygen desaturation or with arousal+ hypopneas with > 30% flow reduction and >=4% oxygen desaturation or with arousal / hour of sleep from type II polysomnography

pordi4pa under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in MROS variables

Overall RDI at 4% desaturation or arousal

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

pordi5p under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in MROS variables

Overall RDI at 5% desaturation

Apnea-Hypopnea Index: Apneas with >=5% oxygen desaturation or with arousal+ hypopneas with > 30% flow reduction and >=5% oxygen desaturation or with arousal / hour of sleep from type II polysomnography

pordi5pa under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in MROS variables

Overall RDI at 5% desaturation or arousal

Scoring respiratory events (RDI) unreliable

porespun under Sleep Monitoring/Polysomnography/Signal Quality in MROS variables

Polysomnogram (PSG) Scoring Notes (Sleep Heart Health Study Visit One (SHHS1)): Respiratory Disturbance Index (RDI) as assessed by scorer - total number of apnea and hypopneas associated with a >=3% desat per hour of sleep.

rdisn under Sleep Monitoring/Polysomnography/Administrative in SHHS variables

The Quality Assessment forms were completed by the scorer during preliminary review of the study, finalized after final scoring

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

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

PSG Total Minutes of REM sleep - REM RDI Denominator

Apnea-Hypopnea Index (Non-Supine): (Apneas with no oxygen desaturation threshold used only with arousal + hypopneas with > 50% flow reduction and with no oxygen desaturation used only with arousal) / hour of sleep in non-supine position from type I polysomnography

rdim0pns under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in CHAT variables

Non-supine Respiratory Disturbance Index (RDI) at all desaturations [(total number of apneas and hypopneas in non-supine body position) / (hours of sleep)]

Apnea-Hypopnea Index (Supine): (Apneas with no oxygen desaturation threshold used only with arousal + hypopneas with > 50% flow reduction and with no oxygen desaturation used only with arousal) / hour of sleep in supine position from type I polysomnography

rdim0ps under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in CHAT variables

Supine Respiratory Disturbance Index (RDI) at all desaturations [(total number of apneas and hypopneas in supine body position) / (hours of sleep)]

Apnea-Hypopnea Index: (Apneas with >= 2% oxygen desaturation threshold used or with arousal+ hypopneas with > 50% flow reduction and with >= 2% oxygen desaturation used or with arousal) / hour of sleep from type I polysomnography

rdim2pa under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in CHAT variables

Respiratory Disturbance Index (RDI) at >=2% desaturation or arousal [(total number of apneas and hypopneas with >=2% desaturation or arousal) / (hours of sleep)]

Apnea-Hypopnea Index (Supine): (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) / hour of sleep in supine from type I polysomnography

rdim5ps under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in CHAT variables

Supine Respiratory Disturbance Index (RDI) at >=5% desaturation [(total number of apneas and hypopneas in supine body position associated with >=5% desaturation) / (hours of sleep)]

Apnea-Hypopnea Index (NREM): (Apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 50% flow reduction and with no oxygen desaturation used and with or without arousal) / hours of NREM sleep from type I polysomnography

rdimnr0p under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in CHAT variables

Non-rapid eye movement sleep (NREM) Respiratory Disturbance Index (RDI) at all desaturations [(total number of apneas and hypopneas in non-rapid eye movement sleep (NREM)) / (hours of non-rapid eye movement sleep (NREM))]

Scoring respiratory events (Respiratory Disturbance Index (RDI)) unreliable

respevpr under Sleep Monitoring/Polysomnography/Signal Quality in CHAT variables

1=Problems with respiratory events (when due to the technical quality of the respiratory signals, distinctions between hypopneas and normal breaths are equivocal in over 20 % of scored events; also when the quality of the oximetry signal raises doubts about actual magnitude of desaturation linked with over 20 % of respiratory events (unstable baseline)

Scoring Respiratory Events (RDI) Unreliable from type II polysomnography

respevpr5 under Sleep Monitoring/Polysomnography/Signal Quality in MESA variables

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

slpprdp under Sleep Monitoring/Polysomnography/Sleep Architecture in CFS variables

Conventionally, this would be called total sleep time (TST) (i.e. total time spent in stage 1 or greater).