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Related Variables

apnea_treatment_year Year of apnea treatment Administrative
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

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:

 		Harmonized/Polysomnography/Apnea-Hypopnea Indices
ahi Apnea-Hypopnea Index: (Apneas with no oxygen desaturation threshold used and with or without arousal and hypopneas with discernible flow reduction and with >= 4% oxygen desaturation and with or without arousal) / hours of sleep from type I polysomnography

Calculated - Summary metric of sleep disordered breathing events

 		Sleep Monitoring/Polysomnography
mean_desat_dur Average Duration of Apnea and Hypopnea Event: (Apneas with no oxygen desaturation threshold used and with or without arousal and hypopneas with discernible flow reduction and with >= 4% oxygen desaturation and with or without arousal) from type I polysomnography Sleep Monitoring/Polysomnography
mean_desat_perc Average Level of Oxygen Desaturation of Apnea and Hypopnea Event: (Apneas with no oxygen desaturation threshold used and with or without arousal and hypopneas with discernible flow reduction and with >= 4% oxygen desaturation and with or without arousal) from type I polysomnography Sleep Monitoring/Polysomnography
nremahi Apnea-Hypopnea Index (NREM): (Apneas with no oxygen desaturation threshold used and with or without arousal and hypopneas with discernible flow reduction and with >= 3% oxygen desaturation and with or without arousal)/ hours of NREM sleep from type I polysomnography

Calculated - Summary metric of sleep disordered breathing events during NREM sleep

 		Sleep Monitoring/Polysomnography
remahi Apnea-Hypopnea Index (REM): (Apneas with no oxygen desaturation threshold used and with or without arousal and hypopneas with discernible flow reduction and with >= 3% oxygen desaturation and with or without arousal)/ hours of REM sleep from type I polysomnography

Calculated - Summary metric of sleep disordered breathing events during REM sleep

 		Sleep Monitoring/Polysomnography
apnea_year Sleep Apnea: Self-reported year of diagnosis

If yes, when was this? ______ Year

 		Sleep Questionnaires/Sleep Disorder
apnea_freq Sleep Apnea: Self-reported frequency

According to what others have told you, or to your own awareness, how often, if ever, do you have momentary periods during sleep when you stop breathing or you breathe abnormally?

 		Sleep Questionnaires/Sleep Disordered Breathing
apnea_need Sleep Apnea: Self-reported treatment need

Were you told you needed treatment? __Yes __No (reported Y told by a doctor that they had sleep apnea)

 		Sleep Treatment
apnea_treated Sleep Apnea: Self-reported treatment received

Did you have the treatment? (when told "Y" needed treatment for sleep apnea)

 		Sleep Treatment
apnea_treatment1 Sleep Apnea: Self-reported treatment recommendation 1

If yes, what treatment was recommended? (When told "Y" need treatment for sleep apnea)

 		Sleep Treatment
apnea_treatment2 Sleep Apnea: self-reported treatment recommendation 2

If yes, what treatment was recommended? (When told "Y" need treatment for sleep apnea)

 		Sleep Treatment
apnea_treatment3 Sleep Apnea: Self-reported treatment recommendation 3

If yes, what treatment was recommended? (When told "Y" need treatment for sleep apnea)

 		Sleep Treatment
apnea_treatment_help Sleep Apnea: Self-reported treatment effect

Did the treatment help (check one)?

 		Sleep Treatment
comp_hrnight Apnea Treatment Compliance: Hours per night using CPAP or BiPAP

If the treatment was CPAP or BiPAP please answer the following questions: If you are using the recommended CPAP/BiPAP, please indicate: b. How many hours per night do you use it?

 		Sleep Treatment
comp_nights_wk Apnea Treatment Compliance: Number of nights per week using CPAP or BiPAP

If the treatment was CPAP or BiPAP please answer the following questions: If you are using the recommended CPAP/BiPAP, please indicate: b. How many nights per week do you use it?

 		Sleep Treatment