Name	Label	Folder
nsrr_age Subject age	Subject age Harmonized by the NSRR team to align with TOPMed and BioDataCatalyst standards. Source: sleepage5c at Visit 5	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: sleepage5c at Visit 5	Harmonized/Demographics
nsrr_race Subject race	Subject race Harmonized by the NSRR team to align with TOPMed and BioDataCatalyst standards. Source: race1c at Visit 5	Harmonized/Demographics
nsrr_sex Subject sex	Subject sex Harmonized by the NSRR team to align with TOPMed and BioDataCatalyst standards. Source: gender1 at Visit 5	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_a0h3a	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_a0h3	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_a0h4a	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_a0h4	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: ai_all5	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: slewake5	Harmonized/Polysomnography/Signal Quality
nsrr_pctdursp_s1 Percentage of total sleep duration (i.e., total sleep time, TST) in stage 1 from polysomnography	Percentage of total sleep duration (i.e., total sleep time, TST) in stage 1 from polysomnography Harmonized by the NSRR team. Source: timest1p5	Harmonized/Polysomnography/Sleep Architecture
nsrr_pctdursp_s2 Percentage of total sleep duration (i.e., total sleep time, TST) in stage 2 from polysomnography	Percentage of total sleep duration (i.e., total sleep time, TST) in stage 2 from polysomnography Harmonized by the NSRR team. Source: timest2p5	Harmonized/Polysomnography/Sleep Architecture
nsrr_pctdursp_s3 Percentage of total sleep duration (i.e., total sleep time, TST) in stage 3/4 from polysomnography	Percentage of total sleep duration (i.e., total sleep time, TST) in stage 3/4 from polysomnography Harmonized by the NSRR team. Source: times34p5	Harmonized/Polysomnography/Sleep Architecture
nsrr_pctdursp_sr Percentage of total sleep duration (i.e., total sleep time, TST) in REM from polysomnography	Percentage of total sleep duration (i.e., total sleep time, TST) in REM from polysomnography Harmonized by the NSRR team. Source: timeremp5	Harmonized/Polysomnography/Sleep Architecture
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: slpprdp5	Harmonized/Polysomnography/Sleep Architecture
nsrr_ttldursp_s1sr REM Sleep Latency: the interval between the first sleep epoch and REM sleep excluding wake	REM Sleep Latency: the interval between the first sleep epoch and REM sleep excluding wake Harmonized by the NSRR team. Source: remlaiip5	Harmonized/Polysomnography/Sleep Architecture
nsrr_ttldurws_f1 Wake After Sleep Onset: the total duration being awake between sleep onset and lights-on/out-bed time from polysomnography	Wake After Sleep Onset: the total duration being awake between sleep onset and lights-on/out-bed time from polysomnography Harmonized by the NSRR team. Source: waso5	Harmonized/Polysomnography/Sleep Architecture
nsrr_ttleffsp_f1 Sleep Efficiency: the ratio of total sleep duration (i.e., total sleep time) to in-bed period (i.e., time in bed) from polysomnography	Sleep Efficiency: the ratio of total sleep duration (i.e., total sleep time) to in-bed period (i.e., time in bed) from polysomnography Harmonized by the NSRR team. Source: slp_eff5	Harmonized/Polysomnography/Sleep Architecture
nsrr_ttllatsp_f1 Sleep Latency: the interval between lights-out/in-bed time and sleep onset from polysomnography	Sleep Latency: the interval between lights-out/in-bed time and sleep onset from polysomnography Harmonized by the NSRR team. Source: slp_lat5	Harmonized/Polysomnography/Sleep Architecture
nsrr_ttlmefsp_f1 Sleep Maintenance Efficiency: the proportion of total sleep duration (i.e., total sleep time) in sleep period (i.e., interval between sleep onset and offset including wake) from polysomnography	Sleep Maintenance Efficiency: the proportion of total sleep duration (i.e., total sleep time) in sleep period (i.e., interval between sleep onset and offset including wake) from polysomnography Harmonized by the NSRR team. Source: slp_maint_eff5	Harmonized/Polysomnography/Sleep Architecture
nsrr_ttlprdbd_f1 Total In-bed Period: the interval between lights off/in-bed time and lights on/out-bed time from polysomnography	Total In-bed Period: the interval between lights off/in-bed time and lights on/out-bed time from polysomnography Harmonized by the NSRR team. Conventionally, this would be called time in bed (TIB) Source: time_bed5	Harmonized/Polysomnography/Sleep Architecture
nsrr_ttlprdsp_s1sr REM Sleep Latency: the interval between the first sleep epoch and REM sleep including wake	REM Sleep Latency: the interval between the first sleep epoch and REM sleep including wake Harmonized by the NSRR team. Source: rem_lat15	Harmonized/Polysomnography/Sleep Architecture

Multi-Ethnic Study of Atherosclerosis