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Cleveland Children's Sleep and Health Study

Name Label Folder
nsrrid
NSRR Subject Identifer
NSRR Subject Identifer

This participant ID was created by the National Sleep Research Resource (NSRR) team to more easily match with file downloads.

Administrative
visit
Visit
Visit Administrative
bmi
Body Mass Index (BMI)
Body Mass Index (BMI) Anthropometry
htcm
Height
Height Anthropometry
waistcm
Waist circumference
Waist circumference

Mean of two measurements

Anthropometry
wtkg
Weight
Weight Anthropometry
bpdias
Diastolic blood pressure (DBP) (mean of 6 measurements)
Diastolic blood pressure (DBP) (mean of 6 measurements)

Blood pressure (BP) is collected six times, three measurements in the evening and three in the morning. This is the mean of the diastolic measurements at each time point.

Clinical Data/Vital Signs/Seated Blood Pressure
bphr
Heart Rate (mean of 6 measurements)
Heart Rate (mean of 6 measurements)

Blood pressure (BP) is collected six times, three measurements in the evening and three in the morning. This is the mean of the heart rate measurements at each time point.

Clinical Data/Vital Signs/Seated Blood Pressure
bpsys
Systolic blood pressure (SBP) (mean of 6 measurements)
Systolic blood pressure (SBP) (mean of 6 measurements)

Blood pressure (BP) is collected six times, three measurements in the evening and three in the morning. This is the mean of the systolic measurements at each time point.

Clinical Data/Vital Signs/Seated Blood Pressure
age
Age at time of visit
Age at time of visit Demographics
ethnicity
Ethnicity
Ethnicity Demographics
male
Male gender
Male gender Demographics
race
Race
Race Demographics
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 3

Harmonized/Anthropometry
nsrr_bp_diastolic
Diastolic blood pressure
Diastolic blood pressure

Average resting diastolic blood pressure of six measurements (three measurements in the evening and three in the morning) collected from the upper arm in a single day. 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: bpdias at Visit 3

Harmonized/Clinical Data
nsrr_bp_systolic
Systolic blood pressure
Systolic blood pressure

Average resting systolic blood pressure of six measurements (three measurements in the evening and three in the morning) collected from the upper arm in a single day. 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: bpsys at Visit 3

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 3

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 3

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 3

Harmonized/Demographics
nsrr_race
Subject race
Subject race

Harmonized by the NSRR team to align with TOPMed and BioDataCatalyst standards. Source: race at Visit 3

Harmonized/Demographics
nsrr_sex
Subject sex
Subject sex

Harmonized by the NSRR team to align with TOPMed and BioDataCatalyst standards. Source: male at Visit 3

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: yevrsmk , ycursmk at Visit 3

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: yevrsmk at Visit 3

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 3

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 3

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 3

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 3

Harmonized/Polysomnography/Apnea-Hypopnea Indices
nsrr_cai
Central Apnea Index: (Central apneas with no oxygen desaturation threshold used and with or without arousal) / hour of sleep
Central Apnea Index: (Central apneas with no oxygen desaturation threshold used and with or without arousal) / hour of sleep

Harmonized by the NSRR team. Source: canbp canop carbp carop slpprdp

Harmonized/Polysomnography/Apnea-Hypopnea Indices
nsrr_oahi_hp3u
Obstructive Apnea-Hypopnea Index : (Obstructive apneas + hypopneas with >= 3% oxygen desaturation) / hour of sleep
Obstructive Apnea-Hypopnea Index : (Obstructive apneas + hypopneas with >= 3% oxygen desaturation) / hour of sleep

Harmonized by the NSRR team. Source: ahi_o0h3

Harmonized/Polysomnography/Apnea-Hypopnea Indices
nsrr_oahi_hp4u
Obstructive Apnea-Hypopnea Index : (Obstructive apneas + hypopneas with >= 4% oxygen desaturation) / hour of sleep
Obstructive Apnea-Hypopnea Index : (Obstructive apneas + hypopneas with >= 4% oxygen desaturation) / hour of sleep

Harmonized by the NSRR team. Source: ahi_o0h4

Harmonized/Polysomnography/Apnea-Hypopnea Indices
nsrr_oai
Obstructive Apnea Index: (Obstructive apneas with no oxygen desaturation threshold used and with or without arousal) / hour of sleep
Obstructive Apnea Index: (Obstructive apneas with no oxygen desaturation threshold used and with or without arousal) / hour of sleep

Harmonized by the NSRR team. Source: oai0p

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 3

Harmonized/Polysomnography/Arousal
nsrr_avglvlsa
Average oxygen saturation in sleep
Average oxygen saturation in sleep

Harmonized by the NSRR team. Source: avgsat

Harmonized/Polysomnography/Oxygen Satuartion
nsrr_minlvlsa
Minimum oxygen saturation in sleep
Minimum oxygen saturation in sleep

Harmonized by the NSRR team. Source: minsat

Harmonized/Polysomnography/Oxygen Satuartion
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 3

Harmonized/Polysomnography/Signal Quality
nsrr_begtimbd_f1
Lights-out or in-bed clock time from polysomnography
Lights-out or in-bed clock time from polysomnography

Conventionally, this variable would be called the start of time in bed (TIB).

Harmonized by the NSRR team. Source: stloutp

Harmonized/Polysomnography/Sleep Architecture
nsrr_begtimsp_f1
Sleep onset time from polysomnography
Sleep onset time from polysomnography

Harmonized by the NSRR team. Source: stonsetp

Harmonized/Polysomnography/Sleep Architecture
nsrr_endtimbd_f1
Lights-on or out-bed clock time from polysomnography
Lights-on or out-bed clock time from polysomnography

Conventionally, this variable would be called the end of time in bed (TIB).

Harmonized by the NSRR team. Source: stlonp

Harmonized/Polysomnography/Sleep Architecture
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: timest1p

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: timest2p

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: times34p

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: timeremp

Harmonized/Polysomnography/Sleep Architecture
nsrr_tst_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 3

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_eff

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: slplatp

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_eff

Harmonized/Polysomnography/Sleep Architecture
ahi_a0h3
Apnea-Hypopnea Index: (All apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with >= 3% oxygen desaturation and with or without arousal) / hour of sleep from type I polysomnography
Apnea-Hypopnea Index: (All apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with >= 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: (All apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with >= 3% oxygen desaturation or with arousal) / hour of sleep from type I polysomnography
Apnea-Hypopnea Index: (All apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with >= 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: (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: (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_a0h4a
Apnea-Hypopnea Index: (All apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with >= 4% oxygen desaturation or with arousal) / hour of sleep from type I polysomnography
Apnea-Hypopnea Index: (All apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with >= 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 with > 3% desaturation and with or without arousal) / hour of sleep from type I polysomnography 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 with > 3% desaturation and with or without arousal) / hour of sleep from type I polysomnography 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 with > 3% 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 with > 3% 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 with > 4% 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 with > 4% 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_c0h4a
Central Apnea-Hypopnea Index: (Central apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with > 4% 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 with > 4% 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 with >= 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 with >= 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 with >= 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 with >= 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 with >= 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 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_o0h4a
Obstructive Apnea-Hypopnea Index: (Obstructive apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with >= 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 with >= 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
ai_all
Arousal Index: Arousals per hour of sleep from type I polysomnography
Arousal Index: 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. [(Total number of arousals) / (hours of sleep)]

Sleep Monitoring/Polysomnography/Arousals
avgsat
Average oxygen saturation during total sleep duration from type I polysomnography
Average oxygen saturation during total sleep duration from type I polysomnography Sleep Monitoring/Polysomnography/Oxygen Saturation
odi3
Oxygen Desaturation Index: Number of oxygen desaturations with >= 3% desat per hour of sleep from type I polysomnography
Oxygen Desaturation Index: Number of oxygen desaturations with >= 3% desat per hour of sleep from type I polysomnography Sleep Monitoring/Polysomnography/Oxygen Saturation
odi4
Oxygen Desaturation Index: Number of oxygen desaturations with >= 4% desat per hour of sleep from type I polysomnography
Oxygen Desaturation Index: Number of oxygen desaturations with >= 4% desat per hour of sleep from type I polysomnography Sleep Monitoring/Polysomnography/Oxygen Saturation
pctlt90
Percentage duration of sleep with oxygen saturation < 90% from type I polysomnography
Percentage duration of sleep with oxygen saturation < 90% from type I polysomnography

Ratio of the number of minutes with oxygen saturation (SaO2) under 90% to the total sleep time expressed in hours.

Sleep Monitoring/Polysomnography/Sleep Architecture
rdi3p
Apnea-Hypopnea Index: (Apneas with >= 3% oxygen desaturation 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 >= 3% oxygen desaturation 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

[(total number of apneas and hypopneas associated with >= 3% oxygen desaturation) / (hours of sleep)]

Sleep Monitoring/Polysomnography/Sleep Architecture
slp_eff
Sleep Efficiency: the ratio of sleep duration (i.e. total sleep time) to in-bed period from type I polysomnography
Sleep Efficiency: the ratio of sleep duration (i.e. total sleep time) to in-bed period from type I polysomnography

Sleep duration is the interval between sleep onset time and lights on/out-bed time while asleep (i.e. total sleep time, TST), while in-bed period is the interval between lights off/in-bed time and lights on/out-bed time (i.e. time in bed, TIB). [100*(total sleep time) / (total time in bed)]

Sleep Monitoring/Polysomnography/Sleep Architecture
slpprdp
Total Sleep Duration: the interval between sleep onset time and lights on/out-bed time while the participant is asleep from type I polysomnography
Total Sleep Duration: the interval between sleep onset time and lights on/out-bed time while the participant is asleep from type I polysomnography

Conventionally, this would be called total sleep time (TST) (i.e. total time spent in stage 1 or greater).

Total time from lights out to lights on that is scored as sleep (rounded to nearest minute)

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
essscore
Total score for modified Epworth Sleepiness Scale (ESS)
Total score for modified Epworth Sleepiness Scale (ESS)

The sum of items 1-8.

Sleep Questionnaires/Hypersomnia/Epworth Sleepiness Scale (ESS)
bmicat
Body Mass Index (BMI) percentile category
Body Mass Index (BMI) percentile category Anthropometry
bmige85
Body Mass Index (BMI) >= 85th percentile
Body Mass Index (BMI) >= 85th percentile Anthropometry
bmige95
Body Mass Index (BMI) >= 95th percentile
Body Mass Index (BMI) >= 95th percentile Anthropometry
bmipct
Body Mass Index (BMI) percentile (from the Centers for Disease Control and Prevention (CDC)) for age, gender
Body Mass Index (BMI) percentile (from the Centers for Disease Control and Prevention (CDC)) for age, gender

Age- and gender-specific Body Mass Index (BMI) percentile based on the Centers for Disease Control and Prevention (CDC) norms

Anthropometry
bmiz
Body Mass Index (BMI) z-score (from the Centers for Disease Control and Prevention (CDC)) for age, gender
Body Mass Index (BMI) z-score (from the Centers for Disease Control and Prevention (CDC)) for age, gender

Age- and gender-specific Body Mass Index (BMI) z-score based on the Centers for Disease Control and Prevention (CDC) norms

Anthropometry
haz
Height z-score (from the Centers for Disease Control and Prevention (CDC)) for age, gender
Height z-score (from the Centers for Disease Control and Prevention (CDC)) for age, gender

Age- and gender-specific height z-score based on the Centers for Disease Control and Prevention (CDC) norms

Anthropometry
htpct
Height percentile (from the Centers for Disease Control and Prevention (CDC)) for age, gender
Height percentile (from the Centers for Disease Control and Prevention (CDC)) for age, gender

Age- and gender-specific height z-score based on the Centers for Disease Control and Prevention (CDC) norms

Anthropometry
pbmi_dad
Body Mass Index (BMI) of Subject's Father
Body Mass Index (BMI) of Subject's Father Anthropometry
pbmi_mom
Body Mass Index (BMI) of Subject's Mother
Body Mass Index (BMI) of Subject's Mother Anthropometry
pctfat_houtkooper
Fat mass percent of weight (Houtkooper)
Fat mass percent of weight (Houtkooper) Anthropometry
pctfat_kotler
Fat mass percent of weight (Kotler)
Fat mass percent of weight (Kotler) Anthropometry
waistge75
Waist circumference >= 75th percentile for age, gender
Waist circumference >= 75th percentile for age, gender

Based on Fernandez pediatric waist circumference percentiles

Anthropometry
waistge90
Waist circumference >= 90th percentile for age, gender
Waist circumference >= 90th percentile for age, gender

Based on Fernandez pediatric waist circumference percentiles

Anthropometry
waistgt75
Waist circumference > 75th percentile for age, gender
Waist circumference > 75th percentile for age, gender

Based on Fernandez pediatric waist circumference percentiles

Anthropometry
waistgt90
Waist circumference > 90th percentile for age, gender
Waist circumference > 90th percentile for age, gender

Based on Fernandez pediatric waist circumference percentiles

Anthropometry
waistpctcat
Waist circumference percentile category
Waist circumference percentile category

Based on Fernandez pediatric waist circumference percentiles

Anthropometry
waz
Weight z-score (from the Centers for Disease Control and Prevention (CDC)) for age, gender
Weight z-score (from the Centers for Disease Control and Prevention (CDC)) for age, gender

Age- and gender-specific weight z-score based on the Centers for Disease Control and Prevention (CDC) norms

Anthropometry
wtpct
Weight percentile (from the Centers for Disease Control and Prevention (CDC)) for age, gender
Weight percentile (from the Centers for Disease Control and Prevention (CDC)) for age, gender

Age- and gender-specific weight percentile based on the Centers for Disease Control and Prevention (CDC) norms

Anthropometry
bp1dias1
Diastolic blood pressure (DBP) (Evening) time 1
Diastolic blood pressure (DBP) (Evening) time 1

First measurement of diastolic blood pressure (DBP) in evening

Clinical Data/Vital Signs/Seated Blood Pressure
bp1dias2
Diastolic blood pressure (DBP) (Evening) time 2
Diastolic blood pressure (DBP) (Evening) time 2

Second measurement of diastolic blood pressure (DBP) in evening

Clinical Data/Vital Signs/Seated Blood Pressure
bp1dias3
Diastolic blood pressure (DBP) (Evening) time 3
Diastolic blood pressure (DBP) (Evening) time 3

Third measurement of diastolic blood pressure (DBP) in evening

Clinical Data/Vital Signs/Seated Blood Pressure
bp1hr1
Heart rate (Evening) time 1
Heart rate (Evening) time 1

First measurement of heart rate in evening

Clinical Data/Vital Signs/Seated Blood Pressure
bp1hr2
Heart rate (Evening) time 2
Heart rate (Evening) time 2

Second measurement of heart rate in evening

Clinical Data/Vital Signs/Seated Blood Pressure
bp1hr3
Heart rate (Evening) time 3
Heart rate (Evening) time 3

Third measurement of heart rate in evening

Clinical Data/Vital Signs/Seated Blood Pressure
bp1sys1
Systolic blood pressure (SBP) (Evening) time 1
Systolic blood pressure (SBP) (Evening) time 1

First measurement of systolic blood pressure (SBP) in evening

Clinical Data/Vital Signs/Seated Blood Pressure
bp1sys2
Systolic blood pressure (SBP) (Evening) time 2
Systolic blood pressure (SBP) (Evening) time 2

Second measurement of systolic blood pressure (SBP) in evening

Clinical Data/Vital Signs/Seated Blood Pressure
bp1sys3
Systolic blood pressure (SBP) (Evening) time 3
Systolic blood pressure (SBP) (Evening) time 3

Third measurement of systolic blood pressure (SBP) in evening

Clinical Data/Vital Signs/Seated Blood Pressure
bp1time
Time of evening collection
Time of evening collection

Time of evening blood pressure (BP) collection

Clinical Data/Vital Signs/Seated Blood Pressure
bp2dias1
Diastolic blood pressure (DBP) (Morning) time 1
Diastolic blood pressure (DBP) (Morning) time 1

First measurement of diastolic blood pressure (DBP) in morning

Clinical Data/Vital Signs/Seated Blood Pressure
bp2dias2
Diastolic blood pressure (DBP) (Morning) time 2
Diastolic blood pressure (DBP) (Morning) time 2

Second measurement of diastolic blood pressure (DBP) in morning

Clinical Data/Vital Signs/Seated Blood Pressure
bp2dias3
Diastolic blood pressure (DBP) (Morning) time 3
Diastolic blood pressure (DBP) (Morning) time 3

Third measurement of diastolic blood pressure (DBP) in morning

Clinical Data/Vital Signs/Seated Blood Pressure
bp2hr1
Heart rate (Morning) time 1
Heart rate (Morning) time 1

First measurement of heart rate in morning

Clinical Data/Vital Signs/Seated Blood Pressure