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Apnea-Hypopnea Index : (All apneas + hypopneas with >= 4% oxygen desaturation or with arousal) / hour of sleep
nsrr_ahi_hp4r under Harmonized/Polysomnography/Apnea-Hypopnea Indices in CCSHS variables
Harmonized by the NSRR team. Refer to the source for detailed definition for respiratory events: :ahi_a0h4a: at Visit 3
Apnea-Hypopnea Index : (All apneas + hypopneas with >=30% nasal cannula [or alternative sensor] reduction with >= 4% oxygen desaturation) / hour of sleep
nsrr_ahi_hp4u_aasm15 under Harmonized/Polysomnography/Apnea-Hypopnea Indices in CCSHS variables
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: :ahi_a0h4: at Visit 3
Apnea-Hypopnea Index: (All apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with >= 3% oxygen desaturation or with arousal) / hour of sleep from type I polysomnography
ahi_a0h3a under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in CCSHS variables
Calculated - Summary metric of sleep disordered breathing events. 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.] Search for all AHI variables consistent with the same clinical guidelines within this dataset
Apnea-Hypopnea Index: (All apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with >= 4% oxygen desaturation and with or without arousal) / hour of sleep from type I polysomnography
ahi_a0h4 under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in CCSHS 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
Apnea-Hypopnea Index : (All apneas + hypopneas with >=50% nasal cannula [or alternative sensor] reduction and >= 3% oxygen desaturation or with arousal) / hour of sleep
nsrr_ahi_hp3r_aasm07 under Harmonized/Polysomnography/Apnea-Hypopnea Indices in CHAT variables
Harmonized by the NSRR team. The definition of hypopnea events is consistent with the American Academy of Sleep Medicine (AASM) 2007 Manual (pediatric). [Iber C et al. The AASM manual for the scoring of sleep and associated events: rules, terminology and technical specifications. Vol. 1. Westchester, IL: American Academy of Sleep Medicine, 2007]Refer to the source for detailed definition for respiratory events: :ahi_a0h3a:
Apnea-Hypopnea Index : (All apneas + hypopneas with >= 3% oxygen desaturation) / hour of sleep
nsrr_ahi_hp3u under Harmonized/Polysomnography/Apnea-Hypopnea Indices in CHAT variables
Harmonized by the NSRR team. Refer to the source for detailed definition for respiratory events: :ahi_a0h3:
Apnea-Hypopnea Index : (All apneas + hypopneas with >= 4% oxygen desaturation or with arousal) / hour of sleep
nsrr_ahi_hp4r under Harmonized/Polysomnography/Apnea-Hypopnea Indices in CHAT variables
Harmonized by the NSRR team. Refer to the source for detailed definition for respiratory events: :ahi_a0h4a:
Apnea-Hypopnea Index : (All apneas + hypopneas with >= 4% oxygen desaturation) / hour of sleep
nsrr_ahi_hp4u under Harmonized/Polysomnography/Apnea-Hypopnea Indices in CHAT variables
Harmonized by the NSRR team. Refer to the source for detailed definition for respiratory events: :ahi_a0h4:
Apnea-Hypopnea Index : (Apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 50% flow reduction and >= 3% oxygen desaturation or with arousal) / hour of sleep from type I polysomnography
ahi_a0h3a under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in CHAT variables
Calculated - Summary metric of sleep disordered breathing events. The definition of hypopnea events is consistent with the American Academy of Sleep Medicine (AASM) 2007 Manual (pediatric). [Iber C et al. The AASM manual for the scoring of sleep and associated events: rules, terminology and technical specifications. Vol. 1. Westchester, IL: American Academy of Sleep Medicine, 2007] Search for all AHI variables consistent with the clinical guidelines within this dataset
Apnea-Hypopnea Index : (All apneas + hypopneas with >=30% nasal cannula [or alternative sensor] reduction and >= 3% oxygen desaturation or with arousal) / hour of sleep
nsrr_ahi_hp3r_aasm15 under Harmonized/Polysomnography/Apnea-Hypopnea Indices in MESA variables
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: :ahi_a0h3a:
Apnea-Hypopnea Index : (All apneas + hypopneas with >= 3% oxygen desaturation) / hour of sleep
nsrr_ahi_hp3u under Harmonized/Polysomnography/Apnea-Hypopnea Indices in MESA variables
Harmonized by the NSRR team. Refer to the source for detailed definition for respiratory events: :ahi_a0h3:
Apnea-Hypopnea Index : (All apneas + hypopneas with >= 4% oxygen desaturation or with arousal) / hour of sleep
nsrr_ahi_hp4r under Harmonized/Polysomnography/Apnea-Hypopnea Indices in MESA variables
Harmonized by the NSRR team. Refer to the source for detailed definition for respiratory events: :ahi_a0h4a:
Apnea-Hypopnea Index : (All apneas + hypopneas with >=30% nasal cannula [or alternative sensor] reduction with >= 4% oxygen desaturation) / hour of sleep
nsrr_ahi_hp4u_aasm15 under Harmonized/Polysomnography/Apnea-Hypopnea Indices in MESA variables
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: :ahi_a0h4:
Apnea-Hypopnea Index: (Apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 3% oxygen desaturation or with arousal) / hour of sleep from type II polysomnography
ahi_a0h3a under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in MESA variables
Calculated - Summary metric of sleep disordered breathing events. 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.] Search for all AHI variables consistent with the same clinical guidelines within this dataset
Apnea-Hypopnea Index: (Apneas with no oxygen desaturation threshold used 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
ahi_a0h4 under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in MESA 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
polysomnography-introduction.md
Heart Biomarker Evaluation in Apnea Treatment
... we have replaced the AHI in NSRR with the AHI used to determine eligibility ... without. In essence, this AHI reflects the Chicago 1999 ...
Looking for non-apnea subject PSG data
Reply by mrueschman on January 25, 2017 on Forum
... variable (e.g. AHI<5 vs. AHI >=5). The Medical History ...
Correct respiratory event in XML (NSRR)
Reply by shaoweizhang on August 2, 2017 on Forum
... (63)/sleep time to calculate AHI, or just use the ... how to calculate the AHI with the annotations in ...
SHHS1- Consistency with publications
Reply by philipterrill on September 7, 2017 on Forum
... to standard measurements (i.e. AHI) in their ability to ... al., AJRCCM, 2010)? Which AHI? Similarly, which AHI variable was used by ...
SHHS1- Consistency with publications
Reply by mrueschman on September 13, 2017 on Forum
... by self-report at enrollment. AHI Variable of Interest 'ahi_a0h4' ... it's a pretty standard AHI definition. I noted in ...
AHI definition in SHHS
Reply by mrueschman on August 13, 2019 on Forum
... oxygen desaturation" as the AHI numerator. The scoring software ...
Calculate AHI by profusion.xml in SHHS
Reply by lijiarui on February 5, 2020 on Forum
... about how to calculate AHI using the annotation files ... SHHS. The definition of AHI should be (the total ...
XML annotations do not match AHI
Reply by mrueschman on October 30, 2023 on Forum
... closer to the true AHI? Yes, this is exactly ... Most of the main AHI variables require hypopneas to ... numerators of the main AHI variables. Regrettably, the Compumedics ...
Apnea-Hypopnea Index : (All apneas + hypopneas with >=30% nasal cannula [or alternative sensor] reduction and >= 3% oxygen desaturation or with arousal) / hour of sleep
nsrr_ahi_hp3r_aasm15 under Harmonized/Polysomnography/Apnea-Hypopnea Indices in ABC variables
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: :ahi_ap0uhp3x3r_f1t1:
Apnea-Hypopnea Index : (All apneas + hypopneas with >= 3% oxygen desaturation) / hour of sleep
nsrr_ahi_hp3u under Harmonized/Polysomnography/Apnea-Hypopnea Indices in ABC variables
Harmonized by the NSRR team. Refer to the source for detailed definition for respiratory events: :ahi_ap0uhp3x3u_f1t1:
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