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MrOS Sleep Study

Name Label Folder
nsrr_ahi_hp3r_aasm15
Apnea-Hypopnea Index : (All apneas + hypopneas with >=30% nasal cannula [or alternative sensor] reduction and >= 3% oxygen desaturation or with arousal) / hour of sleep
Apnea-Hypopnea Index : (All apneas + hypopneas with >=30% nasal cannula [or alternative sensor] reduction and >= 3% oxygen desaturation or with arousal) / hour of sleep

Harmonized by the NSRR team.

The definition for hypopneas is consistent with the following clinical guidelines: (1) American Academy of Sleep Medicine (AASM) 2007 Manual (2012 update) (recommended). Berry RB et al. 2012 (PubMed ID:23066376), and (2) American Academy of Sleep Medicine (AASM) 2015 (recommended) [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.]

Refer to the source for detailed definition for respiratory events: poahi3a at Visit 1

Harmonized/Polysomnography/Apnea-Hypopnea Indices
nsrr_ahi_hp3u
Apnea-Hypopnea Index : (All apneas + hypopneas with >= 3% oxygen desaturation) / hour of sleep
Apnea-Hypopnea Index : (All apneas + hypopneas with >= 3% oxygen desaturation) / hour of sleep

Harmonized by the NSRR team. Refer to the source for detailed definition for respiratory events: poahi3 at Visit 1

Harmonized/Polysomnography/Apnea-Hypopnea Indices
nsrr_ahi_hp4r
Apnea-Hypopnea Index : (All apneas + hypopneas with >= 4% oxygen desaturation or with arousal) / hour of sleep
Apnea-Hypopnea Index : (All apneas + hypopneas with >= 4% oxygen desaturation or with arousal) / hour of sleep

Harmonized by the NSRR team. Refer to the source for detailed definition for respiratory events: poahi4a at Visit 1

Harmonized/Polysomnography/Apnea-Hypopnea Indices
nsrr_ahi_hp4u_aasm15
Apnea-Hypopnea Index : (All apneas + hypopneas with >=30% nasal cannula [or alternative sensor] reduction with >= 4% oxygen desaturation) / hour of sleep
Apnea-Hypopnea Index : (All apneas + hypopneas with >=30% nasal cannula [or alternative sensor] reduction with >= 4% oxygen desaturation) / hour of sleep

Harmonized by the NSRR team.

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.].

Refer to the source for detailed definition for respiratory events: poahi4 at Visit 1

Harmonized/Polysomnography/Apnea-Hypopnea Indices
nsrr_phrnumar_f1
Arousal Index: Number of arousals per hour of sleep from polysomnography
Arousal Index: Number of arousals per hour of sleep from polysomnography

Harmonized by the NSRR team. Source: poai_all at Visit 1

Harmonized/Polysomnography/Arousal
nsrr_flag_spsw
Study scored sleep/wake rather than with full sleep staging if there is not sufficient quality on EEG lead. Studies scored as sleep wake have all sleep stages scored using a default of Stage 2 and no arousals are scored.
Study scored sleep/wake rather than with full sleep staging if there is not sufficient quality on EEG lead. Studies scored as sleep wake have all sleep stages scored using a default of Stage 2 and no arousals are scored.

Harmonized by the NSRR team. Source: poprstag at Visit 1

Harmonized/Polysomnography/Signal Quality
nsrr_ttldursp_f1
Total Sleep Duration: the interval between sleep onset and sleep offset while the participant is asleep from polysomnography
Total Sleep Duration: the interval between sleep onset and sleep offset while the participant is asleep from polysomnography

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

Harmonized by the NSRR team. Source: poslprdp at Visit 1

Harmonized/Polysomnography/Sleep Architecture