ahi_a0h3 ahi_a0h4

Related Variables

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

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:

 		Harmonized/Polysomnography/Apnea-Hypopnea Indices
canbp Total number of central apnea in NREM sleep in supine position: Central apneas with no oxygen desaturation threshold used and with or without arousal from type II polysomnography Sleep Monitoring/Polysomnography/Respiratory Event Counts
canop Total number of central apnea in NREM sleep in non-supine position: Central apneas with no oxygen desaturation threshold used and with or without arousal from type II polysomnography Sleep Monitoring/Polysomnography/Respiratory Event Counts
carbp Total number of central apnea in REM sleep in supine position: Central apneas with no oxygen desaturation threshold used and with or without arousal from type II polysomnography Sleep Monitoring/Polysomnography/Respiratory Event Counts
carop Total number of central apnea in REM sleep in non-supine position: Central apneas with no oxygen desaturation threshold used and with or without arousal from type II polysomnography Sleep Monitoring/Polysomnography/Respiratory Event Counts
hnrba3 Total number of hypopnea in NREM sleep in supine position: Hypopneas with >= 3% oxygen desaturation or with arousal from type II polysomnography Sleep Monitoring/Polysomnography/Respiratory Event Counts
hnroa3 Total number of hypopnea in NREM sleep in non-supine position: Hypopneas with >= 3% oxygen desaturation or with arousal from type II polysomnography Sleep Monitoring/Polysomnography/Respiratory Event Counts
hremba3 Total number of hypopnea in REM sleep in supine position: Hypopneas with >= 3% oxygen desaturation or with arousal from type II polysomnography Sleep Monitoring/Polysomnography/Respiratory Event Counts
hroa3 Total number of hypopnea in REM sleep in non-supine position: Hypopneas with >= 3% oxygen desaturation or with arousal from type II polysomnography Sleep Monitoring/Polysomnography/Respiratory Event Counts
oanbp Total number of obstructive apnea in NREM sleep in supine position: Obstructive apneas with no oxygen desaturation threshold used and with or without arousal from type II polysomnography Sleep Monitoring/Polysomnography/Respiratory Event Counts
oanop Total number of obstructive apnea in NREM sleep in non-supine position: Obstructive apneas with no oxygen desaturation threshold used and with or without arousal from type II polysomnography Sleep Monitoring/Polysomnography/Respiratory Event Counts
oarbp Total number of obstructive apnea in REM sleep in supine position: Obstructive apneas with no oxygen desaturation threshold used and with or without arousal from type II polysomnography Sleep Monitoring/Polysomnography/Respiratory Event Counts
oarop Total number of obstructive apneas with no oxygen desaturation threshold used and with or without arousal during REM sleep in non-supine position from type II polysomnography Sleep Monitoring/Polysomnography/Respiratory Event Counts
slpprdp Total Sleep Duration: the interval between sleep onset and sleep offset while the participant is asleep from type II polysomnography

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

 		Sleep Monitoring/Polysomnography/Sleep Architecture