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Home Positive Airway Pressure

Name Label Folder
clusterid
Recoded Site Identifier
Recoded Site Identifier

The original site identifier was removed from the dataset because it was identifiable.

Administrative
nsrrid
NSRR Subject Identifier
NSRR Subject Identifier

This identifer links the subject's data and files.

Administrative
treatmentarm
Treatment arm
Treatment arm

Subjects were randomized to a treatment arm (i.e. diagnostic study type) at the end of the Baseline Visit.

Administrative
bmi
Body mass index (BMI)
Body mass index (BMI) Anthropometry
diastolic
Diastolic blood pressure
Diastolic blood pressure

Average of the 2nd and 3rd resting diastolic blood pressure readings.

Clinical Data/Vital Signs/Seated Blood Pressure
systolic
Systolic blood pressure
Systolic blood pressure

Average of the 2nd and 3rd resting systolic blood pressure readings.

Clinical Data/Vital Signs/Seated Blood Pressure
age
Age at baseline visit
Age at baseline visit

The age of the subject at the time of the baseline visit and randomization.

Demographics
ethnicity
Ethnicity
Ethnicity Demographics
gender
Gender
Gender Demographics
race7
Race
Race Demographics
sf36_mcs
Short Form (36) Health Survey (SF-36): Mental component summary (standardized)
Short Form (36) Health Survey (SF-36): Mental component summary (standardized)

Summary component score of mental health. Taft C et al. 2001 (PubMED ID: 11763202)

Search for all SF-36 variables within this dataset

General Health/Medical Outcomes Study Short Form (SF-36)
sf36_pcs
Short Form (36) Health Survey (SF-36): Physical component summary (standardized)
Short Form (36) Health Survey (SF-36): Physical component summary (standardized)

Summary component score of physical health. Taft C et al. 2001 (PubMED ID: 11763202)

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 Baseline

Harmonized/Anthropometry
nsrr_bp_diastolic
Diastolic blood pressure
Diastolic blood pressure

Average resting diastolic blood pressure of two measurements (2nd and 3rd readings) collected from the upper arm in a single clinic visit.

Harmonized by the NSRR team to align with TOPMed and BioDataCatalyst standards. Source: diastolic at Baseline

Harmonized/Clinical Data
nsrr_bp_systolic
Systolic blood pressure
Systolic blood pressure

Average resting systolic blood pressure of two measurements (2nd and 3rd readings) collected from the upper arm in a single clinic visit.

Harmonized by the NSRR team to align with TOPMed and BioDataCatalyst standards. Source: systolic at Baseline

Harmonized/Clinical Data
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

Harmonized/Demographics
nsrr_race
Subject race
Subject race

Harmonized by the NSRR team to align with TOPMed and BioDataCatalyst standards. Source: race7

Harmonized/Demographics
nsrr_sex
Subject sex
Subject sex

Harmonized by the NSRR team to align with TOPMed and BioDataCatalyst standards. Source: gender

Harmonized/Demographics
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: tst_modified

Harmonized/Polysomnography/Sleep Architecture
aphypi
Apnea-Hypopnea Index (AHI): (All apneas with no oxygen desaturation threshold used + hypopneas with > 30% flow reduction and with >= 4% oxygen desaturation ) / hour of estimated sleep from type III home sleep test
Apnea-Hypopnea Index (AHI): (All apneas with no oxygen desaturation threshold used + hypopneas with > 30% flow reduction and with >= 4% oxygen desaturation ) / hour of estimated sleep from type III home sleep test

Calculated - Summary metric of sleep disordered breathing events. Estimated sleep duration, providing an approximation of total sleep duration (i.e. total sleep time) inferred from analysis of non-EEG channels Zhao et al., 2017 (PMID:27707441)

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.].

Search for all AHI variables consistent with the same clinical guidelines within this dataset

Sleep Monitoring/Home Sleep Test
avgbpn
Average heart rate during estimated sleep from type III home sleep test
Average heart rate during estimated sleep from type III home sleep test

Estimated sleep duration, providing an approximation of total sleep duration (i.e. total sleep time) inferred from analysis of non-EEG channels Zhao et al., 2017 (PMID:27707441)

Sleep Monitoring/Home Sleep Test
avgsat
Average oxygen saturation during estimated sleep from type III home sleep test
Average oxygen saturation during estimated sleep from type III home sleep test

Estimated sleep duration, providing an approximation of total sleep duration (i.e. total sleep time) inferred from analysis of non-EEG channels Zhao et al., 2017 (PMID:27707441)

Sleep Monitoring/Home Sleep Test
index_time
Total recording period from type III home sleep test
Total recording period from type III home sleep test

Conventionally this variable would be called total recording time.

This time period is used to calculate indices and other averages.

Sleep Monitoring/Home Sleep Test
ahi
Apnea-Hypopnea Index (AHI): (All apneas with no oxygen desaturation threshold used + hypopneas with > 30% flow reduction and with >= 4% oxygen desaturation ) / hour of sleep from type I polysomnography or type III home sleep test
Apnea-Hypopnea Index (AHI): (All apneas with no oxygen desaturation threshold used + hypopneas with > 30% flow reduction and with >= 4% oxygen desaturation ) / hour of sleep from type I polysomnography or type III home sleep test

Composite AHI based on the diagnostic sleep study and home sleep study.

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.].

Search for all AHI variables consistent with the same clinical guidelines within this dataset

Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
ahi_d
Apnea-Hypopnea Index (AHI) (split-night, diagnostic): (All apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and with >= 4% oxygen desaturation and with or without arousal ) / hour of sleep from type I polysomnography
Apnea-Hypopnea Index (AHI) (split-night, diagnostic): (All apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and with >= 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 (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.].

Search for all AHI variables consistent with the same clinical guidelines within this dataset

Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
ahi_full
Apnea-Hypopnea Index (AHI) (full-night): (All apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and with >= 4% oxygen desaturation and with or without arousal ) / hour of sleep from type I polysomnography
Apnea-Hypopnea Index (AHI) (full-night): (All apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and with >= 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 (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.].

Search for all AHI variables consistent with the same clinical guidelines within this dataset

Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
ahi_t
Apnea-Hypopnea Index (AHI) (split-night, treatment): (All apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and with >= 4% oxygen desaturation and with or without arousal ) / hour of sleep from type I polysomnography
Apnea-Hypopnea Index (AHI) (split-night, treatment): (All apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and with >= 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 (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.].

Search for all AHI variables consistent with the same clinical guidelines within this dataset

Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
avghr
Average heart rate during sleep from type I polysomnography (full-night)
Average heart rate during sleep from type I polysomnography (full-night) Sleep Monitoring/Polysomnography/Heart Rate
avghr_d
Average heart rate during sleep from type I polysomnography (split-night, diagnostic)
Average heart rate during sleep from type I polysomnography (split-night, diagnostic) Sleep Monitoring/Polysomnography/Heart Rate
avghr_t
Average heart rate during sleep from type I polysomnography (split-night, treatment)
Average heart rate during sleep from type I polysomnography (split-night, treatment) Sleep Monitoring/Polysomnography/Heart Rate
avgsao2
Average oxygen saturation during sleep from type I polysomnography (full-night)
Average oxygen saturation during sleep from type I polysomnography (full-night) Sleep Monitoring/Polysomnography/Oxygen Saturation
avgsao2_d
Average oxygen saturation during sleep from type I polysomnography (split-night, diagnostic)
Average oxygen saturation during sleep from type I polysomnography (split-night, diagnostic) Sleep Monitoring/Polysomnography/Oxygen Saturation
avgsao2_t
Average oxygen saturation during sleep from type I polysomnography (split-night, treatment)
Average oxygen saturation during sleep from type I polysomnography (split-night, treatment) Sleep Monitoring/Polysomnography/Oxygen Saturation
slpprd_d
Total sleep duration from type I polysomnography (split-night, diagnostic)
Total sleep duration from type I polysomnography (split-night, diagnostic)

Sleep duration is the interval between sleep onset time and lights on/out-bed time while asleep, conventionally called total sleep time.

This time period is used to calculate indices and other averages.

Sleep Monitoring/Polysomnography/Sleep Architecture
slpprdp
Total sleep duration from type I polysomnography (full-night)
Total sleep duration from type I polysomnography (full-night)

Sleep duration is the interval between sleep onset time and lights on/out-bed time while asleep, conventionally called total sleep time.

This time period is used to calculate indices and other averages.

Sleep Monitoring/Polysomnography/Sleep Architecture
slpprd_t
Total sleep duration from type I polysomnography (split-night, treatment)
Total sleep duration from type I polysomnography (split-night, treatment)

Sleep duration is the interval between sleep onset time and lights on/out-bed time while asleep, conventionally called total sleep time.

This time period is used to calculate indices and other averages.

Sleep Monitoring/Polysomnography/Sleep Architecture
tst_modified
Total sleep duration from type I polysomnography and type III home sleep test
Total sleep duration from type I polysomnography and type III home sleep test

Composite total sleep duration based on the diagnostic sleep study and home sleep study.

Sleep duration is the interval between sleep onset time and lights on/out-bed time while asleep, conventionally called total sleep time. For participants from the type III home sleep test, it is based on estimated sleep duration, which provides an approximation of total sleep duration (i.e. total sleep time) inferred from analysis of non-EEG channels Zhao et al., 2017 (PMID:27707441)

This time period is used to calculate indices and other averages.

Sleep Monitoring/Polysomnography/Sleep Architecture
cal_total
Calgary Sleep Apnea Quality of Life Index (SAQLI): Total Score
Calgary Sleep Apnea Quality of Life Index (SAQLI): Total Score Sleep Questionnaires/Calgary Sleep Apnea Quality of Life Index (Calgary SAQLI)
esstotal
Epworth Sleepiness Scale (ESS): Total Score
Epworth Sleepiness Scale (ESS): 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
fosq_global
Functional Outcomes of Sleep Questionnaire (FOSQ): Global Score
Functional Outcomes of Sleep Questionnaire (FOSQ): Global Score

Summary score based on the sum of the subscale scores of the Functional Outcomes of Sleep Questionnaire, with potential range of 5 to 20 - mean of the subscales multiplied by five (5). A lower score suggests greater function impairment. 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)
avgpapuse
Average Continuous Positive Airway Pressure (CPAP) use per night
Average Continuous Positive Airway Pressure (CPAP) use per night

Computed as the total time of Continuous Positive Airway Pressure (CPAP) use divided by the total number of days in the interval. Follow-up periods of 30 days were used at Month 1 and Month 3.

Sleep Treatment/Adherence/CPAP Adherence
pressure
Optimal titration pressure
Optimal titration pressure Administrative
ttt
Time to treatment
Time to treatment

The difference between the date device delivered and date of enrollment.

Administrative
visit
Visit number
Visit number Administrative
completedm1
Completed Month 1 Follow-up Visit
Completed Month 1 Follow-up Visit Administrative/CONSORT Diagram
completedm1m3
Completed Month 1 and Month 3 Follow-up Visits
Completed Month 1 and Month 3 Follow-up Visits Administrative/CONSORT Diagram
completedm3
Completed Month 3 Follow-up Visit
Completed Month 3 Follow-up Visit Administrative/CONSORT Diagram
crossover
Crossed-over to Lab Arm from Home Arm
Crossed-over to Lab Arm from Home Arm Administrative/CONSORT Diagram
diagnostic
Received diagnostic sleep study
Received diagnostic sleep study Administrative/CONSORT Diagram
eligible
Eligible for treatment (Apnea-Hypopnea Index (AHI) >= 15 and not withdrawn)
Eligible for treatment (Apnea-Hypopnea Index (AHI) >= 15 and not withdrawn) Administrative/CONSORT Diagram
titrated
Titrated for optimal pressure
Titrated for optimal pressure Administrative/CONSORT Diagram
heightcm
Height
Height Anthropometry
neckcm
Neck circumference
Neck circumference Anthropometry
waistcm
Waist circumference
Waist circumference Anthropometry
weightkg
Weight
Weight Anthropometry
agg_ment
Short Form (36) Health Survey (SF-36): Aggregate Mental Score
Short Form (36) Health Survey (SF-36): Aggregate Mental Score

Summary component score of mental health. Taft C et al. 2001 (PubMED ID: 11763202)

Search for all SF-36 variables within this dataset

General Health/Medical Outcomes Study Short Form (SF-36)
agg_phys
Short Form (36) Health Survey (SF-36): Aggregate Physical Score
Short Form (36) Health Survey (SF-36): Aggregate Physical Score

Summary component score of physical health. Taft C et al. 2001 (PubMED ID: 11763202)

Search for all SF-36 variables within this dataset

General Health/Medical Outcomes Study Short Form (SF-36)
bp_norm
Short Form (36) Health Survey (SF-36): Body pain subscale score (standardized)
Short Form (36) Health Survey (SF-36): Body pain subscale score (standardized)

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)
gh_norm
Short Form (36) Health Survey (SF-36): General health perceptions subscale score (standardized)
Short Form (36) Health Survey (SF-36): General health perceptions subscale score (standardized)

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)
mh_norm
Short Form (36) Health Survey (SF-36): General mental health subscale score (standardized)
Short Form (36) Health Survey (SF-36): General mental health subscale score (standardized)

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)
pf_norm
Short Form (36) Health Survey (SF-36): Physical functioning subscale score (standardized)
Short Form (36) Health Survey (SF-36): Physical functioning subscale score (standardized)

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)
re_norm
Short Form (36) Health Survey (SF-36): Role limitations due to emotional problem subscale score (standardized)
Short Form (36) Health Survey (SF-36): Role limitations due to emotional problem subscale score (standardized)

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)
rp_norm
Short Form (36) Health Survey (SF-36): Role limitations due to physical problem subscale score (standardized)
Short Form (36) Health Survey (SF-36): Role limitations due to physical problem subscale score (standardized)

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)
sf_norm
Short Form (36) Health Survey (SF-36): Social functioning subscale score (standardized)
Short Form (36) Health Survey (SF-36): Social functioning subscale score (standardized)

The subscale score is based on 2 items from the Medical Outcomes Study Short Form 36 (SF-36). A high score suggests the participant "performs normal social activities without interference due to physical or 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)
vt_norm
Short Form (36) Health Survey (SF-36): Vitality subscale score (standardized)
Short Form (36) Health Survey (SF-36): Vitality subscale score (standardized)

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)
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 at Baseline

Harmonized/Polysomnography/Apnea-Hypopnea Indices
dxadhd
Diagnosed with attention deficit hyperactivity disorder (ADHD)
Diagnosed with attention deficit hyperactivity disorder (ADHD) Medical History
dxasth
Diagnosed with asthma
Diagnosed with asthma Medical History
dxca
Diagnosed with cancer
Diagnosed with cancer Medical History
dxcatyp
If diagnosed with cancer: Cancer type
If diagnosed with cancer: Cancer type Medical History
dxchd
Diagnosed with coronary heart disease (angina, heart attack)
Diagnosed with coronary heart disease (angina, heart attack) Medical History
dxchf
Diagnosed with congestive heart failure
Diagnosed with congestive heart failure Medical History
dxdep
Diagnosed with depression
Diagnosed with depression Medical History
dxdiab
Diagnosed with diabetes
Diagnosed with diabetes Medical History
dxemph
Diagnosed with emphysema
Diagnosed with emphysema Medical History
dxgerd
Diagnosed with gastroesophageal reflux disease (GERD)
Diagnosed with gastroesophageal reflux disease (GERD) Medical History
dxhay
Diagnosed with hay fever / nasal congestion / sinusitis
Diagnosed with hay fever / nasal congestion / sinusitis Medical History
dxhich
Diagnosed with high cholesterol
Diagnosed with high cholesterol Medical History
dxhtn
Diagnosed with hypertension (high blood pressure)
Diagnosed with hypertension (high blood pressure) Medical History
dxhyperthy
Diagnosed with hyperthyroidism (over-active thyroid)
Diagnosed with hyperthyroidism (over-active thyroid) Medical History
dxhypothy
Diagnosed with hypothyroidism (under-active thyroid)
Diagnosed with hypothyroidism (under-active thyroid) Medical History
dxkidney
Diagnosed with kidney disease
Diagnosed with kidney disease Medical History
dxliver
Diagnosed with liver disease
Diagnosed with liver disease Medical History
dxplhtn
Diagnosed with pulmonary hypertension
Diagnosed with pulmonary hypertension Medical History
dxseiz
Diagnosed with seizures / epilepsy
Diagnosed with seizures / epilepsy Medical History
dxstroke
Diagnosed with stroke
Diagnosed with stroke Medical History
ahige15
Apnea-Hypopnea Index (AHI) >= 15 on diagnostic sleep study
Apnea-Hypopnea Index (AHI) >= 15 on diagnostic sleep study Sleep Monitoring/Administrative
endtime
Clock time when the participant is out of bed or lights are on from type III home sleep apnea test
Clock time when the participant is out of bed or lights are on from type III home sleep apnea test

The Analysis Stop Time from the Embletta Sleep Report.

Sleep Monitoring/Home Sleep Test
satlt90p
Percentage of total estimated sleep duration with < 90% oxygen saturation from type III home sleep apnea test
Percentage of total estimated sleep duration with < 90% oxygen saturation from type III home sleep apnea test

Estimated sleep duration, providing an approximation of total sleep duration (i.e. total sleep time) inferred from analysis of non-EEG channels Zhao et al., 2017 (PMID:27707441)

Sleep Monitoring/Home Sleep Test
starttime
Clock time when the participant is in bed or lights are out from type III home sleep apnea test
Clock time when the participant is in bed or lights are out from type III home sleep apnea test

The Analysis Start Time from the Embletta Sleep Report.

Sleep Monitoring/Home Sleep Test
ablation
Ablation at optimal pressure (Apnea-Hypopnea Index (AHI) < 10)
Ablation at optimal pressure (Apnea-Hypopnea Index (AHI) < 10) Sleep Monitoring/Polysomnography/Administrative
diagtype
Diagnostic type used to determine Apnea-Hypopnea Index (AHI)
Diagnostic type used to determine Apnea-Hypopnea Index (AHI) Sleep Monitoring/Polysomnography/Administrative
pctrem_d
Percent of total sleep duration in REM sleep from type I polysomnography (split-night, diagnostic)
Percent of total sleep duration in REM sleep from type I polysomnography (split-night, diagnostic)

Conventionally, total sleep duration would be called total sleep time (TST).

Sleep Monitoring/Polysomnography/Sleep Architecture
pctrem_t
Percent of total sleep duration in REM sleep from type I polysomnography (split-night, treatment)
Percent of total sleep duration in REM sleep from type I polysomnography (split-night, treatment)

Conventionally, total sleep duration would be called total sleep time (TST).

Sleep Monitoring/Polysomnography/Sleep Architecture
pctsa90h
Percentage of total sleep duration with < 90% oxygen saturation from type I polysomnography (full-night)
Percentage of total sleep duration with < 90% oxygen saturation from type I polysomnography (full-night)

Conventionally, total sleep duration would be called total sleep time (TST).

Sleep Monitoring/Polysomnography/Sleep Architecture
pctsa90p_d
Portion of sleep time spent with oxygen saturation less than 90% (split-night, diagnostic)
Portion of sleep time spent with oxygen saturation less than 90% (split-night, diagnostic)

Conventionally, total sleep duration would be called total sleep time (TST).

Sleep Monitoring/Polysomnography/Sleep Architecture
pctsa90p_t
Portion of sleep time spent with oxygen saturation less than 90% (split-night, treatment)
Portion of sleep time spent with oxygen saturation less than 90% (split-night, treatment)

Conventionally, total sleep duration would be called total sleep time (TST).

Sleep Monitoring/Polysomnography/Sleep Architecture
pctstg1_d
Percentage of stage 1 sleep among total sleep duration from type I polysomnography (split-night, diagnostic)
Percentage of stage 1 sleep among total sleep duration from type I polysomnography (split-night, diagnostic)

Conventionally, total sleep duration would be called total sleep time (TST).

Sleep Monitoring/Polysomnography/Sleep Architecture