4 - Search - Sleep Data - National Sleep Research Resource

Average oxygen desaturation for all respiratory events with >= 4% desat or arousal in REM sleep in supine position: Apneas with >= 4% oxygen desaturation or with arousal + hypopneas with > 50% flow reduction and >= 4% oxygen desaturation or arousal from type I polysomnography

avdrba4 under Sleep Monitoring/Polysomnography/Oxygen Saturation in CHAT variables

Average oxygen desaturation for all respiratory events with >= 4% desat and with or without arousal in REM sleep in supine position: Apneas with >= 4% oxygen desaturation and with or without arousal + hypopneas with > 50% flow reduction and >= 4% oxygen desaturation and with or without arousal from type I polysomnography

avdrbp4 under Sleep Monitoring/Polysomnography/Oxygen Saturation in CHAT variables

Average oxygen desaturation for all respiratory events with >= 4% desat or arousal in REM sleep in non-supine position: Apneas with >= 4% oxygen desaturation or with arousal + hypopneas with > 50% flow reduction and >= 4% oxygen desaturation or arousal from type I polysomnography

avdroa4 under Sleep Monitoring/Polysomnography/Oxygen Saturation in CHAT variables

Average oxygen desaturation for all respiratory events with >= 4% desat and with or without arousal in REM sleep in non-supine position: Apneas with >= 4% oxygen desaturation and with or without arousal + hypopneas with > 50% flow reduction and >= 4% oxygen desaturation and with or without arousal from type I polysomnography

avdrop4 under Sleep Monitoring/Polysomnography/Oxygen Saturation in CHAT variables

6-625-mop-episodic-events-in-sleep.md

Sleep Heart Health Study

... the C3 or C 4 electrode). If this happens ... high voltage delta (< 4 Hz) or theta (4 - 7 Hz) waves ...

montage-and-sampling-rate-information.md

Mignot Nature Communications

... position | - | 4 | - | -| ... pulse | - | 4 | - | -| ... spo2 | - | 4 | - | - ...

polysomnography-introduction.md

Wisconsin Sleep Cohort

... and 8 fixed, with 4 DC coupled auxiliary inputs. ... 121 recordings at Visit 4 - 2 recordings at ... - 3: N3 - 4: N4 - 5: REM ...

README.md

Sleep Disordered Breathing, ApoE and Lipid Metabolism

... excursions and associated ≥ 4% desaturation or arousal. The ...

ENIGMA-Sleep working group: An international sleep collaboration

Posted by michaelprerau on September 20, 2021 in Guest Blogger

What is the ENIGMA-Sleep? The Enhancing NeuroImaging Genetics through Meta ...

Longitudinal Trajectories of Spectral Power During Sleep in Middle-Aged and Older Adults

Posted by szhivotovsky on October 5, 2023 in Guest Blogger

Overview: Textbook depictions of aging suggest a linear, almost deterministic, ...

Use and misuse of random forest variable importance metrics in medicine: demonstrations through incident stroke prediction

Posted by szhivotovsky on January 18, 2024 in Guest Blogger

... Pittsburgh, Pittsburgh, PA, USA 4 Brigham and Women’s Hospital, ...

Calculate AHI by profusion.xml in SHHS

Reply by sankari on April 1, 2020 on Forum

... with a 3% or 4% desat (only the overall ... hypopneas resulting in a 4% desaturation or arousal) result ...

Questions about SHHS on sleep AHI data

Reply by JaHyungKoo on April 15, 2022 on Forum

... can select one of 4 condition by the AHI-condition ...

Apnea-Hypopnea Index (Non-Supine): (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 in non-supine position from type I polysomnography

rdi4pns under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in CFS variables

Calculated - Summary metric of sleep disordered breathing events.

Apnea-Hypopnea Index (Supine): (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 in supine position from type I polysomnography

rdi4ps under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in CFS variables

Calculated - Summary metric of sleep disordered breathing events.

Apnea-Hypopnea Index (NREM): (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 NREM sleep from type I polysomnography

rdinr4p under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in CFS 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 >= 4% oxygen desaturation and with or without arousal) / hour of REM sleep from type I polysomnography

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

Calculated - Summary metric of sleep disordered breathing events. The definition of hypopnea events is consistent with the following clinical guidelines: (1) AASM 2012 update (recommended) Berry RB et al. 2012 (PubMed ID:23066376), and (2) AASM 2015 (acceptable) [Berry RB et al. The AASM Manual for the Scoring of Sleep and Associated Events: Rules, Terminology and Technical Specifications, Version 2.2. American Academy of Sleep Medicine, Darien, IL, 2015.]. Search for all AHI variables consistent with the same clinical guidelines within this dataset

Number of oxygen desaturation per hour in NREM sleep with oxygen desaturation >= 4% from type I polysomnography

dsnr4 under Sleep Monitoring/Polysomnography/Oxygen Saturation in CFS variables

Number of desaturations >= 4% per hour in NonREM sleep

Number of oxygen desaturation per hour in REM sleep with oxygen desaturation >= 4% from type I polysomnography

dsrem4 under Sleep Monitoring/Polysomnography/Oxygen Saturation in CFS variables

Number of desaturations >= 4% per hour in REM sleep

MAP Index 4: Narcolepsy Like Symptoms Score

index_4 under Sleep Questionnaires/Hypersomnia in STAGES variables

Apnea-Hypopnea Index: (All apneas with >= 4% oxygen desaturation + hypopneas with > 30% flow reduction and with >= 4% oxygen desaturation) / hour of estimated sleep from type III home sleep apnea test

ahi_ap4nhp3x4n_f1t3 under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in NUMOM2B variables

Calculated - Summary metric of sleep disordered breathing events. The definition of hypopnea events is consistent with the following clinical guidelines: (1) AASM 2012 update (alternative) Berry RB et al. 2012 (PubMed ID:23066376), and (2) AASM 2015 (acceptable) [Berry RB et al. The AASM Manual for the Scoring of Sleep and Associated Events: Rules, Terminology and Technical Specifications, Version 2.2. American Academy of Sleep Medicine, Darien, IL, 2015.]. Search for all AHI variables consistent with the same clinical guidelines within this dataset

Short UPPS-P Impulsive Behavior Scale: Unfinished tasks really bother me

upps_4 under General Health/Short UPPS-P Impulsive Behavior Scale in ANSWERS variables

Item from the Short UPPS-P Impulsive Behavior Scale with a range of 1 (Strongly Agree) to 4 (Strongly Disagree). Reverse coded so higher scores indicate more impulsivity. Cyders et al 2014 (PMID: 24636739) Question text: For each statement, please indicate how much you agree or disagree with the statement. Search for all Short UPPS-P Impulsive Behavior Scale variables within this dataset

Short UPPS-P Impulsive Behavior Scale: Lack of Premeditation Subscore

upps_lackpremeditate under General Health/Short UPPS-P Impulsive Behavior Scale in ANSWERS variables

Summary item from the Short UPPS-P Impulsive Behavior Scale, calculated from :upps_2:, :upps_5:, :upps_12: and :upps_19:.Range 4 -16 with higher scores indicating less impulsivity. Note: reverse coding for items 5, 12 and 19, where we change 1=4, 2=3, 3=2 and 4=1 before calculating the overall sum. Cyders et al 2014 (PMID: 24636739)Search for all Short UPPS-P Impulsive Behavior Scale variables within this dataset

Short UPPS-P Impulsive Behavior Scale Total Score

upps_total under General Health/Short UPPS-P Impulsive Behavior Scale in ANSWERS variables

Total from the Short UPPS-P Impulsive Behavior Scale. Range 20 -80 with higher scores indicating less impulsivity. Note: reverse coding for items 1, 4, 5, 7, 12 and 19, where we change 1=4, 2=3, 3=2 and 4=1 before calculating the overall sum. Cyders et al 2014 (PMID: 24636739)Search for all Short UPPS-P Impulsive Behavior Scale variables within this dataset

Respiratory Event Index: (Apneas with >= 4% oxygen desaturation + hypopneas with > 50% flow reduction and >= 4% oxygen desaturation) / hours of artifact-free estimated sleep from type IV home sleep apnea test

slpa63 under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in HCHS variables

Estimated sleep duration, providing an approximation of total sleep duration (i.e. total sleep time) inferred from analysis of non-EEG channels Zhao et al., 2017 (PMID:27707441) Any continuous periods of >=20 min with loss of respiratory channel was marked as wake and not included in the estimates. Please refer to :slpa30: for the valid estimated sleep duration used to calculate this index.