Harmonized - ABC Variables - Sleep Data - National Sleep Research Resource

Name	Label	Folder
nsrr_bmi Body mass index (BMI)	Body mass index (BMI) Harmonized by the NSRR team to align with TOPMed and BioDataCatalyst standards. Source: bmi at Baseline	Harmonized/Anthropometry
nsrr_age Subject age	Subject age Harmonized by the NSRR team to align with TOPMed and BioDataCatalyst standards. Source: age at Baseline	Harmonized/Demographics
nsrr_age_gt89 Indicates whether the subject's age (in years) used during date obfuscation is greater than 89 years	Indicates whether the subject's age (in years) used during date obfuscation is greater than 89 years Harmonized by the NSRR team to align with TOPMed and BioDataCatalyst standards. Source: age at Baseline	Harmonized/Demographics
nsrr_ethnicity Subject ethnicity	Subject ethnicity Original missing value is recoded as "not reported". Harmonized by the NSRR team to align with TOPMed and BioDataCatalyst standards. Source: ethnicity at Baseline	Harmonized/Demographics
nsrr_race Subject race	Subject race Harmonized by the NSRR team to align with TOPMed and BioDataCatalyst standards. Source: race at Baseline	Harmonized/Demographics
nsrr_sex Subject sex	Subject sex Harmonized by the NSRR team to align with TOPMed and BioDataCatalyst standards. Source: gender at Baseline	Harmonized/Demographics
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: ahi_ap0uhp3x3r_f1t1	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: ahi_ap0uhp3x3u_f1t1	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: ahi_ap0uhp3x4r_f1t1	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: ahi_ap0uhp3x4u_f1t1	Harmonized/Polysomnography/Apnea-Hypopnea Indices
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: ttldursp_f1t1	Harmonized/Polysomnography/Sleep Architecture

Apnea, Bariatric surgery, and CPAP study