CFS Variables - Sleep Data - National Sleep Research Resource - NSRR

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	Name	Label	Folder
	nsrrid NSRR subject ID	NSRR subject ID This subject identifier was created by the National Sleep Research Resource (NSRR) team to more easily match with file downloads.	Administrative
	bmi Participant's body mass index (BMI)	Participant's body mass index (BMI)	Anthropometry
	htcm Participant's height	Participant's height	Anthropometry
	wtkg Participant's weight	Participant's weight	Anthropometry
	dbp Mean diastolic blood pressure	Mean diastolic blood pressure	Clinical Data/Vital Signs/Seated Blood Pressure
	sbp Mean systolic blood pressure	Mean systolic blood pressure	Clinical Data/Vital Signs/Seated Blood Pressure
	age_category Participant's age (category)	Participant's age (category)	Demographics
	ethnicity Participant's ethnicity	Participant's ethnicity	Demographics
	race Participant's race	Participant's race Derived from othrace	Demographics
	sex Participant's sex	Participant's sex	Demographics
	be Child Health Questionnaire Parent Form 50 Questions: Behavior subscore (0-100)	Child Health Questionnaire Parent Form 50 Questions: Behavior subscore (0-100) The subscale score is based on 6 items from the Child Health Questionnaire Parent Form 50 Questions. A high score suggests fewer behavior problems. Asmussen L et al., 2000 (PubMed ID: 11029320) Search for all CHQ-PF50 variables within this dataset	General Health/Child Health Questionnaire (CHQ)
	bp Child Health Questionnaire Parent Form 50 Questions: Bodily pain subscore (0-100)	Child Health Questionnaire Parent Form 50 Questions: Bodily pain subscore (0-100) The subscale score is based on 2 items from the Child Health Questionnaire Parent Form 50 Questions. A high score suggests less bodily pain. Asmussen L et al., 2000 (PubMed ID: 11029320) Search for all CHQ-PF50 variables within this dataset	General Health/Child Health Questionnaire (CHQ)
	fa Child Health Questionnaire Parent Form 50 Questions: Family activities subscore (0-100)	Child Health Questionnaire Parent Form 50 Questions: Family activities subscore (0-100) The subscale score is based on 6 items from the Child Health Questionnaire Parent Form 50 Questions. A high score suggests less limitations in family activities. Asmussen L et al., 2000 (PubMed ID: 11029320) Search for all CHQ-PF50 variables within this dataset	General Health/Child Health Questionnaire (CHQ)
	fc Child Health Questionnaire Parent Form 50 Questions: Family cohesion subscore	Child Health Questionnaire Parent Form 50 Questions: Family cohesion subscore The subscale score is based on 1 item from the Child Health Questionnaire Parent Form 50 Questions. A high score suggests higher family cohesion. Asmussen L et al., 2000 (PubMed ID: 11029320) Search for all CHQ-PF50 variables within this dataset	General Health/Child Health Questionnaire (CHQ)
	gh Child Health Questionnaire Parent Form 50 Questions: General health subscore (0-100)	Child Health Questionnaire Parent Form 50 Questions: General health subscore (0-100) The subscale score is based on 6 items from the Child Health Questionnaire Parent Form 50 Questions. A high score suggests better general health. Asmussen L et al., 2000 (PubMed ID: 11029320) Search for all CHQ-PF50 variables within this dataset	General Health/Child Health Questionnaire (CHQ)
	mh Child Health Questionnaire Parent Form 50 Questions: Mental health subscore (0-100)	Child Health Questionnaire Parent Form 50 Questions: Mental health subscore (0-100) The subscale score is based on 5 items from the Child Health Questionnaire Parent Form 50 Questions. A high score suggests better mental health. Asmussen L et al., 2000 (PubMed ID: 11029320) Search for all CHQ-PF50 variables within this dataset	General Health/Child Health Questionnaire (CHQ)
	pe Child Health Questionnaire Parent Form 50 Questions: Parental impact-emotional subscore (0-100)	Child Health Questionnaire Parent Form 50 Questions: Parental impact-emotional subscore (0-100) The subscale score is based on 3 items from the Child Health Questionnaire Parent Form 50 Questions. A high score suggests less impact on parent emotional well-being. Asmussen L et al., 2000 (PubMed ID: 11029320) Search for all CHQ-PF50 variables within this dataset	General Health/Child Health Questionnaire (CHQ)
	phf Child Health Questionnaire Parent Form 50 Questions: Physical functioning subscore (0-100)	Child Health Questionnaire Parent Form 50 Questions: Physical functioning subscore (0-100) The subscale score is based on 6 items from the Child Health Questionnaire Parent Form 50 Questions. A high score suggests better physical functioning. Asmussen L et al., 2000 (PubMed ID: 11029320) Search for all CHQ-PF50 variables within this dataset	General Health/Child Health Questionnaire (CHQ)
	phs Child Health Questionnaire Parent Form 50 Questions: Physical Summary Health Score	Child Health Questionnaire Parent Form 50 Questions: Physical Summary Health Score The summary score is based on 10 subscores from the Child Health Questionnaire Parent Form 50 Questions. Asmussen L et al., 2000 (PubMed ID: 11029320) Search for all CHQ-PF50 variables within this dataset	General Health/Child Health Questionnaire (CHQ)
	pss Child Health Questionnaire Parent Form 50 Questions: Psychosocial Summary Health Score	Child Health Questionnaire Parent Form 50 Questions: Psychosocial Summary Health Score The summary score is based on 10 subscores from the Child Health Questionnaire Parent Form 50 Questions. Asmussen L et al., 2000 (PubMed ID: 11029320) Search for all CHQ-PF50 variables within this dataset	General Health/Child Health Questionnaire (CHQ)
	pt Child Health Questionnaire Parent Form 50 Questions: Parental impact-time subscore (0-100)	Child Health Questionnaire Parent Form 50 Questions: Parental impact-time subscore (0-100) The subscale score is based on 3 items from the Child Health Questionnaire Parent Form 50 Questions. A high score suggests less impact on parent time. Asmussen L et al., 2000 (PubMed ID: 11029320) Search for all CHQ-PF50 variables within this dataset	General Health/Child Health Questionnaire (CHQ)
	reb Child Health Questionnaire Parent Form 50 Questions: Role/Social functioning due to emotional/behavioral problems subscore	Child Health Questionnaire Parent Form 50 Questions: Role/Social functioning due to emotional/behavioral problems subscore The subscale score is based on 3 items from the Child Health Questionnaire Parent Form 50 Questions. A high score suggests less limitations in role/social functioninig due to emotional/behavioral problems. Asmussen L et al., 2000 (PubMed ID: 11029320) Search for all CHQ-PF50 variables within this dataset	General Health/Child Health Questionnaire (CHQ)
	rp Child Health Questionnaire Parent Form 50 Questions: Role/Social functioning due to physical problems subscore (0-100)	Child Health Questionnaire Parent Form 50 Questions: Role/Social functioning due to physical problems subscore (0-100) The subscale score is based on 2 items from the Child Health Questionnaire Parent Form 50 Questions. A high score suggests less limitations in role/social functioninig due to physical problems. Asmussen L et al., 2000 (PubMed ID: 11029320) Search for all CHQ-PF50 variables within this dataset	General Health/Child Health Questionnaire (CHQ)
	se Child Health Questionnaire Parent Form 50 Questions: Self-esteem subscore (0-100)	Child Health Questionnaire Parent Form 50 Questions: Self-esteem subscore (0-100) The subscale score is based on 6 items from the Child Health Questionnaire Parent Form 50 Questions. A high score suggests better self-esteem. Asmussen L et al., 2000 (PubMed ID: 11029320) Search for all CHQ-PF50 variables within this dataset	General Health/Child Health Questionnaire (CHQ)
	efp Medical Outcomes Study SF-36: Vitality subscale score (0-100)	Medical Outcomes Study SF-36: Vitality subscale score (0-100) The subscale score is based on 4 items from the Medical Outcomes Study Short Form 36 (SF-36). A high score suggests the participant "feels full of pep and energy all of the time in the past 4 week ". Ware JE and Sherbourne CD, 1992 (PubMed ID: 1593914) Search for all SF-36 variables within this dataset	General Health/Medical Outcomes Study Short Form (SF-36)
	mhp Medical Outcomes Study SF-36: General mental health subscale score (0-100)	Medical Outcomes Study SF-36: General mental health subscale score (0-100) The subscale score is based on 5 items from the Medical Outcomes Study Short Form 36 (SF-36). A high score suggests the participant "feels peaceful, happy, and calm all of the time in the past 4 weeks ". Ware JE and Sherbourne CD, 1992 (PubMed ID: 1593914) Search for all SF-36 variables within this dataset	General Health/Medical Outcomes Study Short Form (SF-36)
	painp Medical Outcomes Study SF-36: Body pain subscale score (0-100)	Medical Outcomes Study SF-36: Body pain subscale score (0-100) The subscale score is based on 2 items from the Medical Outcomes Study Short Form 36 (SF-36). A high score suggests the participant has "no pain or limitations due to pain in the past 4 weeks". Ware JE and Sherbourne CD, 1992 (PubMed ID: 1593914) Search for all SF-36 variables within this dataset	General Health/Medical Outcomes Study Short Form (SF-36)
	php Medical Outcomes Study SF-36: Physical functioning subscale score (0-100)	Medical Outcomes Study SF-36: Physical functioning subscale score (0-100) The subscale score is based on 10 items from the Medical Outcomes Study Short Form 36 (SF-36). A high score suggests the participant "performs all types of physical activities including the most vigorous without limitations due to health". Ware JE and Sherbourne CD, 1992 (PubMed ID: 1593914) Search for all SF-36 variables within this dataset	General Health/Medical Outcomes Study Short Form (SF-36)
	pp Medical Outcomes Study SF-36: General health perceptions subscale score (0-100)	Medical Outcomes Study SF-36: General health perceptions subscale score (0-100) The subscale score is based on 5 items from the Medical Outcomes Study Short Form 36 (SF-36). A high score suggests the participant "believes personal health is excellent". Ware JE and Sherbourne CD, 1992 (PubMed ID: 1593914) Search for all SF-36 variables within this dataset	General Health/Medical Outcomes Study Short Form (SF-36)
	rfep Medical Outcomes Study SF-36: Role limitations due to emotional problem subscale score (0-100)	Medical Outcomes Study SF-36: Role limitations due to emotional problem subscale score (0-100) The subscale score is based on 3 items from the Medical Outcomes Study Short Form 36 (SF-36). A high score suggests the participant has "no problems with work or other daily activities as a result of emotional problems in the past 4 weeks ". Ware JE and Sherbourne CD, 1992 (PubMed ID: 1593914) Search for all SF-36 variables within this dataset	General Health/Medical Outcomes Study Short Form (SF-36)
	rfpp Medical Outcomes Study SF-36: Role limitations due to physical problem subscale score (0-100)	Medical Outcomes Study SF-36: Role limitations due to physical problem subscale score (0-100) The subscale score is based on 4 items from the Medical Outcomes Study Short Form 36 (SF-36). A high score suggests the participant has "no problems with work or other daily activities as a result of physical health in the past 4 weeks". Ware JE and Sherbourne CD, 1992 (PubMed ID: 1593914) Search for all SF-36 variables within this dataset	General Health/Medical Outcomes Study Short Form (SF-36)
	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 Visit 5	Harmonized/Anthropometry
	nsrr_bp_diastolic Diastolic blood pressure	Diastolic blood pressure Average resting diastolic blood pressure of two measurements collected from the upper arm in a single clinic visit. When more than two measurements were collected, the average was calculated using the second and third measurements. In cases where either of the measurements was missing, the average was calculated discarding the missing value. Harmonized by the NSRR team to align with TOPMed and BioDataCatalyst standards. Source: dbp at Visit 5	Harmonized/Clinical Data
	nsrr_bp_systolic Systolic blood pressure	Systolic blood pressure Average resting systolic blood pressure of two measurements collected from the upper arm in a single clinic visit. When more than two measurements were collected, the average was calculated using the second and third measurements. In cases where either of the measurements was missing, the average was calculated discarding the missing value. Harmonized by the NSRR team to align with TOPMed and BioDataCatalyst standards. Source: sbp at Visit 5	Harmonized/Clinical Data
	nsrr_age Subject age	Subject age Harmonized by the NSRR team to align with TOPMed and BioDataCatalyst standards. Source: age 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: age at Visit 5	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 Visit 5	Harmonized/Demographics
	nsrr_race Subject race	Subject race Harmonized by the NSRR team to align with TOPMed and BioDataCatalyst standards. Source: race at Visit 5	Harmonized/Demographics
	nsrr_sex Subject sex	Subject sex Harmonized by the NSRR team to align with TOPMed and BioDataCatalyst standards. Source: male at Visit 5	Harmonized/Demographics
	nsrr_current_smoker Currently smoking cigarettes	Currently smoking cigarettes Indicates whether subject currently smokes cigarettes. Harmonized by the NSRR team to align with TOPMed and BioDataCatalyst standards. Source: nowsmoke, monsmoke at Visit 5	Harmonized/Lifestyle and Behavioral Health
	nsrr_ever_smoker Ever smoked cigarettes	Ever smoked cigarettes Indicates whether subject ever regularly smoked cigarettes. Harmonized by the NSRR team to align with TOPMed and BioDataCatalyst standards. Source: smoked at Visit 5	Harmonized/Lifestyle and Behavioral Health
	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 at Visit 5	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 at Visit 5	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 at Visit 5	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 at Visit 5	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_all at Visit 5	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: slewake at Visit 5	Harmonized/Polysomnography/Signal Quality
	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: slpprdp at Visit 5	Harmonized/Polysomnography/Sleep Architecture
	cvd Self-report of a physician diagnosis of cardiovascular disease	Self-report of a physician diagnosis of cardiovascular disease	Medical History
	diabetes2 Physician diagnosis of diabetes or diabetes medication usage or abnormal fasting	Physician diagnosis of diabetes or diabetes medication usage or abnormal fasting	Medical History
	diachol Physician-diagnosed elevated cholesterol	Physician-diagnosed elevated cholesterol	Medical History
	ahi_a0h3 Apnea-Hypopnea Index : (Apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 3% oxygen desaturation and with or without arousal) / hour of sleep from type I polysomnography	Apnea-Hypopnea Index : (Apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 3% oxygen desaturation and with or without arousal) / hour of sleep from type I polysomnography Calculated - Summary metric of sleep disordered breathing events.	Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
	ahi_a0h3a 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 I polysomnography	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 I polysomnography 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	Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
	ahi_a0h4 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 I polysomnography	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 I polysomnography Calculated - Summary metric of sleep disordered breathing events. The definition of hypopnea events is consistent with the following clinical guidelines: (1) AASM 2012 update (recommended) 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	Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
	ahi_a0h4a Apnea-Hypopnea Index : (Apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 4% oxygen desaturation or with arousal) / hour of sleep from type I polysomnography	Apnea-Hypopnea Index : (Apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 4% oxygen desaturation or with arousal) / hour of sleep from type I polysomnography Calculated - Summary metric of sleep disordered breathing events.	Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
	ahi_c0h3 Central Apnea-Hypopnea Index : (Central apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 3% oxygen desaturation and with or without arousal) / hour of sleep from type I polysomnography	Central Apnea-Hypopnea Index : (Central apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 3% oxygen desaturation and with or without arousal) / hour of sleep from type I polysomnography Calculated - Summary metric of sleep disordered breathing events.	Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
	ahi_c0h3a Central Apnea-Hypopnea Index : (Central 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 I polysomnography	Central Apnea-Hypopnea Index : (Central 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 I polysomnography 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	Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
	ahi_c0h4 Central Apnea-Hypopnea Index : (Central 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 I polysomnography	Central Apnea-Hypopnea Index : (Central 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 I polysomnography Calculated - Summary metric of sleep disordered breathing events. The definition of hypopnea events is consistent with the following clinical guidelines: (1) AASM 2012 update (recommended) 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	Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
	ahi_c0h4a Central Apnea-Hypopnea Index : (Central apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 4% oxygen desaturation or with arousal) / hour of sleep from type I polysomnography	Central Apnea-Hypopnea Index : (Central apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 4% oxygen desaturation or with arousal) / hour of sleep from type I polysomnography Calculated - Summary metric of sleep disordered breathing events.	Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
	ahi_o0h3 Obstructive Apnea-Hypopnea Index : (Obstructive apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 3% oxygen desaturation and with or without arousal) / hour of sleep from type I polysomnography	Obstructive Apnea-Hypopnea Index : (Obstructive apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 3% oxygen desaturation and with or without arousal) / hour of sleep from type I polysomnography Calculated - Summary metric of sleep disordered breathing events.	Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
	ahi_o0h3a Obstructive Apnea-Hypopnea Index : (Obstructive 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 I polysomnography	Obstructive Apnea-Hypopnea Index : (Obstructive 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 I polysomnography 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	Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
	ahi_o0h4 Obstructive Apnea-Hypopnea Index : (Obstructive 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 I polysomnography	Obstructive Apnea-Hypopnea Index : (Obstructive 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 I polysomnography Calculated - Summary metric of sleep disordered breathing events. The definition of hypopnea events is consistent with the following clinical guidelines: (1) AASM 2012 update (recommended) 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	Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
	ahi_o0h4a Obstructive Apnea-Hypopnea Index : (Obstructive apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 4% oxygen desaturation or with arousal) / hour of sleep from type I polysomnography	Obstructive Apnea-Hypopnea Index : (Obstructive apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 4% oxygen desaturation or with arousal) / hour of sleep from type I polysomnography Calculated - Summary metric of sleep disordered breathing events.	Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
	cai0p Central Apnea Index : (Central apneas with no oxygen desaturation threshold used and with or without arousal) / hour of sleep from type I polysomnography	Central Apnea Index : (Central apneas with no oxygen desaturation threshold used and with or without arousal) / hour of sleep from type I polysomnography Calculated - Summary metric of sleep disordered breathing events.	Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
	oai0p Obstructive Apnea Index : (Obstructive apneas with no oxygen desaturation threshold used and with or without arousal) / hour of sleep from type I polysomnography	Obstructive Apnea Index : (Obstructive apneas with no oxygen desaturation threshold used and with or without arousal) / hour of sleep from type I polysomnography Calculated - Summary metric of sleep disordered breathing events.	Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
	rdi0p Apnea-Hypopnea Index : Apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and with no oxygen desaturation used and with or without arousal / hour of sleep from type I polysomnography	Apnea-Hypopnea Index : Apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and with no oxygen desaturation used and with or without arousal / hour of sleep from type I polysomnography Calculated - Summary metric of sleep disordered breathing events.	Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
	rdinr3p Apnea-Hypopnea Index (NREM): (Apneas with no oxygen desaturation threshold used and with or without arousal and hypopneas with > 30% flow reduction and with >= 3% oxygen desaturation and with or without arousal)/ hours of NREM sleep from type I polysomnography	Apnea-Hypopnea Index (NREM): (Apneas with no oxygen desaturation threshold used and with or without arousal and hypopneas with > 30% 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/Apnea-Hypopnea Indices
	rdirem3p Apnea-Hypopnea Index (REM): (Apneas with no oxygen desaturation threshold used and with or without arousal and hypopneas with > 30% flow reduction and with >= 3% oxygen desaturation and with or without arousal)/ hours of REM sleep from type I polysomnography	Apnea-Hypopnea Index (REM): (Apneas with no oxygen desaturation threshold used and with or without arousal and hypopneas with > 30% 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-Hypopnea Indices
	ai_all Arousal Index: number of arousals per hour of sleep from type I polysomnography	Arousal Index: number of arousals per hour of sleep from type I polysomnography Total number of arousals per hour of sleep. Ratio of count of arousals to total sleep time in hours.	Sleep Monitoring/Polysomnography/Arousal
	typetx Type of sleep apnea treatment	Type of sleep apnea treatment	Sleep Monitoring/Polysomnography/Evening and Morning Survey
	bpmavg Average heart rate from type I polysomnography	Average heart rate from type I polysomnography Average heart rate (entire recording)	Sleep Monitoring/Polysomnography/Heart Rate
	bpmmax Maximum heart rate from type I polysomnography	Maximum heart rate from type I polysomnography Highest heart rate (entire recording)	Sleep Monitoring/Polysomnography/Heart Rate
	bpmmin Minimum heart rate from type I polysomnography	Minimum heart rate from type I polysomnography Lowest heart rate (entire recording)	Sleep Monitoring/Polysomnography/Heart Rate
	avgrplm Number of periodic limb movements per hour of REM sleep from type I polysomnography	Number of periodic limb movements per hour of REM sleep from type I polysomnography Number of PLM per hour of REM sleep	Sleep Monitoring/Polysomnography/Limb Movements
	lmar Total number of limb movements with arousal and respiratory event from type I polysomnography	Total number of limb movements with arousal and respiratory event from type I polysomnography Total limb movements with arousal and respiratory events	Sleep Monitoring/Polysomnography/Limb Movements
	noplm Total number of periodic limb movements in sleep from type I polysomnography	Total number of periodic limb movements in sleep from type I polysomnography Number of PLM during sleep	Sleep Monitoring/Polysomnography/Limb Movements
	plmaslp Total number of periodic limb movements with arousal from type I polysomnography	Total number of periodic limb movements with arousal from type I polysomnography Total PLMs with arousal in all sleep	Sleep Monitoring/Polysomnography/Limb Movements
	avgsat Average oxygen saturation in sleep from type I polysomnography	Average oxygen saturation in sleep from type I polysomnography	Sleep Monitoring/Polysomnography/Oxygen Saturation
	minsat Minimum oxygen saturation from type I polysomnography	Minimum oxygen saturation from type I polysomnography Lowest SaO2% during sleep	Sleep Monitoring/Polysomnography/Oxygen Saturation
	apnea3 Total number of apnea with >= 3% oxygen desaturation and with or without arousal from type I polysomnography	Total number of apnea with >= 3% oxygen desaturation and with or without arousal from type I polysomnography	Sleep Monitoring/Polysomnography/Respiratory Event Counts
	cavgdur Average duration of central apnea from type I polysomnography	Average duration of central apnea from type I polysomnography Average duration of central apnea (entire recording)	Sleep Monitoring/Polysomnography/Respiratory Event Lengths
	havgdur Average duration of hypopnea from type I polysomnography	Average duration of hypopnea from type I polysomnography Average duration of hypopnea (entire recording)	Sleep Monitoring/Polysomnography/Respiratory Event Lengths
	longap Maximum duration of apnea from type I polysomnography	Maximum duration of apnea from type I polysomnography Longest apnea (entire recording)	Sleep Monitoring/Polysomnography/Respiratory Event Lengths
	longhyp Maximum duration of hypopnea from type I polysomnography	Maximum duration of hypopnea from type I polysomnography Longest hypopnea (entire recording)	Sleep Monitoring/Polysomnography/Respiratory Event Lengths
	oavgdur Average duration of obstructive apnea from type I polysomnography	Average duration of obstructive apnea from type I polysomnography Average duration of obstructive apnea (entire recording)	Sleep Monitoring/Polysomnography/Respiratory Event Lengths
	overall Overall study grade	Overall study grade Overall study grade	Sleep Monitoring/Polysomnography/Signal Quality
	nsupinep Percentage duration of sleep in non-supine position from type I polysomnography	Percentage duration of sleep in non-supine position from type I polysomnography	Sleep Monitoring/Polysomnography/Sleep Architecture
	pctsa75h Percentage duration of sleep with oxygen saturation < 75% from type I polysomnography	Percentage duration of sleep with oxygen saturation < 75% from type I polysomnography	Sleep Monitoring/Polysomnography/Sleep Architecture
	pctsa80h Percentage duration of sleep with oxygen saturation < 80% from type I polysomnography	Percentage duration of sleep with oxygen saturation < 80% from type I polysomnography	Sleep Monitoring/Polysomnography/Sleep Architecture
	pctsa85h Percentage duration of sleep with oxygen saturation < 85% from type I polysomnography	Percentage duration of sleep with oxygen saturation < 85% from type I polysomnography	Sleep Monitoring/Polysomnography/Sleep Architecture
	pctsa90h Percent of the total sleep duration with oxygen saturation below 90% from type I polysomnography	Percent of the total sleep duration with oxygen saturation below 90% from type I polysomnography Conventionally, total sleep duration would be called total sleep time (TST).	Sleep Monitoring/Polysomnography/Sleep Architecture
	supinep Percentage duration of sleep in supine position from type I polysomnography	Percentage duration of sleep in supine position from type I polysomnography	Sleep Monitoring/Polysomnography/Sleep Architecture
	times34p Percentage duration of sleep in stage 3/4 sleep from type I polysomnography	Percentage duration of sleep in stage 3/4 sleep from type I polysomnography Percent of sleep time in stage 3-4	Sleep Monitoring/Polysomnography/Sleep Architecture
	timest1p Percentage of stage 1 sleep among total sleep duration from type I polysomnography	Percentage of stage 1 sleep among total sleep duration from type I polysomnography Conventionally, total sleep duration would be called total sleep time (TST).	Sleep Monitoring/Polysomnography/Sleep Architecture
	timest2p Percentage of stage 2 sleep among total sleep duration from type I polysomnography	Percentage of stage 2 sleep among total sleep duration from type I polysomnography Conventionally, total sleep duration would be called total sleep time (TST).	Sleep Monitoring/Polysomnography/Sleep Architecture
	waso Wake After Sleep Onset: the total duration being awake between sleep onset and lights-on/out-bed time from type I polysomnography	Wake After Sleep Onset: the total duration being awake between sleep onset and lights-on/out-bed time from type I polysomnography	Sleep Monitoring/Polysomnography/Sleep Architecture
	essscor Epworth Sleepiness Scale: Total score	Epworth Sleepiness Scale: Total score Calculated - Total score based on an 8-item questionnaires ranking likelihood of dozing off Johns MW 1991 (PubMed ID: 1798888). Scale 0-3 for individual items; 0 to 24 for overall score. Search for all ESS variables within this dataset	Sleep Questionnaires/Hypersomnia/Epworth Sleepiness Scale (ESS)
	fosq_actlev Functional Outcomes of Sleep: Activity Level Score	Functional Outcomes of Sleep: Activity Level Score Item from Functional Outcomes of Sleep Questionnaire. Weaver et. al, 1997 (Pubmed ID: 9415942) Search for all Functional Outcomes of Sleep variables within this dataset	Sleep Questionnaires/Sleep Disturbance/Functional Outcomes of Sleep Questionnaire (FOSQ)
	fosq_genprd Functional Outcomes of Sleep: General Productivity Score	Functional Outcomes of Sleep: General Productivity Score Item from Functional Outcomes of Sleep Questionnaire. Weaver et. al, 1997 (Pubmed ID: 9415942) Search for all Functional Outcomes of Sleep variables within this dataset	Sleep Questionnaires/Sleep Disturbance/Functional Outcomes of Sleep Questionnaire (FOSQ)
	fosq_global Functional Outcomes of Sleep: Global Score	Functional Outcomes of Sleep: Global Score Item from Functional Outcomes of Sleep Questionnaire. Weaver et. al, 1997 (Pubmed ID: 9415942) Search for all Functional Outcomes of Sleep variables within this dataset	Sleep Questionnaires/Sleep Disturbance/Functional Outcomes of Sleep Questionnaire (FOSQ)