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Cleveland Children's Sleep and Health Study

Name Label Folder
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
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
cslp
Coefficient of variation of daily total sleep duration in main sleep in all days from actigraphy
Coefficient of variation of daily total sleep duration in main sleep in all days from actigraphy Sleep Monitoring/Actigraphy
cslpend
Coefficient of variation of daily total sleep duration in main sleep on weekdays from actigraphy
Coefficient of variation of daily total sleep duration in main sleep on weekdays from actigraphy Sleep Monitoring/Actigraphy
cslpwk
Coefficient of variation of daily total sleep duration in main sleep on weekends from actigraphy
Coefficient of variation of daily total sleep duration in main sleep on weekends from actigraphy Sleep Monitoring/Actigraphy
mseff
Average daily sleep efficiency in all days from actigraphy
Average daily sleep efficiency in all days from actigraphy

Sleep efficiency is the proportion of sleep duration (i.e. total sleep time, tst) in total rest period (i.e. rest interval) in main sleep. Sleep duration is the interval between sleep onset time and sleep offset time while asleep. In this study, rest interval is the same as in-bed period.

Sleep Monitoring/Actigraphy
mseffend
Average daily sleep efficiency on weekends from actigraphy
Average daily sleep efficiency on weekends from actigraphy

Sleep efficiency is the proportion of sleep duration (i.e. total sleep time, tst) in total rest period (i.e. rest interval) in main sleep. Sleep duration is the interval between sleep onset time and sleep offset time while asleep. In this study, rest interval is the same as in-bed period.

Sleep Monitoring/Actigraphy
mseffwk
Average daily sleep efficiency on weekdays from actigraphy
Average daily sleep efficiency on weekdays from actigraphy

Sleep efficiency is the proportion of sleep duration (i.e. total sleep time, tst) in total rest period (i.e. rest interval) in main sleep. Sleep duration is the interval between sleep onset time and sleep offset time while asleep. In this study, rest interval is the same as in-bed period.

Sleep Monitoring/Actigraphy
mslp
Average daily total sleep duration in main sleep in all days from actigraphy
Average daily total sleep duration in main sleep in all days from actigraphy

Conventionally this variable would be called total sleep time (TST).

Sleep Monitoring/Actigraphy
mslpend
Average daily total sleep duration in main sleep on weekends from actigraphy
Average daily total sleep duration in main sleep on weekends from actigraphy

Conventionally this variable would be called total sleep time (TST).

Sleep Monitoring/Actigraphy
mslpwk
Average daily total sleep duration in main sleep on weekdays from actigraphy
Average daily total sleep duration in main sleep on weekdays from actigraphy

Conventionally this variable would be called total sleep time (TST).

Sleep Monitoring/Actigraphy
nslp
Total number of nights with sleep data in the entire actigraphy recording period in all days from actigraphy
Total number of nights with sleep data in the entire actigraphy recording period in all days from actigraphy Sleep Monitoring/Actigraphy
nslpend
Total number of weekend nights with sleep data in the entire actigraphy recording period in all days from actigraphy
Total number of weekend nights with sleep data in the entire actigraphy recording period in all days from actigraphy Sleep Monitoring/Actigraphy
nslpwk
Total number of weekday nights with sleep data in the entire actigraphy recording period in all days from actigraphy
Total number of weekday nights with sleep data in the entire actigraphy recording period in all days from actigraphy Sleep Monitoring/Actigraphy
oahi3
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

Ratio of the count of all obstructive apneas (all desaturations) plus the count of hypopneas associated with at least a >=3% oxygen desaturation to the total sleep time expressed in hours.

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

Obstructive Apnea Index at all desaturations [(Total number of obstructive apneas associated with all desaturations) / (hours of sleep)]

Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices
minsat
Minimum oxygen saturation during total sleep duration from type I polysomnography
Minimum oxygen saturation during total sleep duration from type I polysomnography

Lowest oxygen saturation (SaO2)% during sleep

Sleep Monitoring/Polysomnography/Oxygen Saturation
canbp
Total number of central apnea in NREM sleep in supine position: Central apneas with no oxygen desaturation threshold used and with or without arousal from type I polysomnography
Total number of central apnea in NREM sleep in supine position: Central apneas with no oxygen desaturation threshold used and with or without arousal from type I polysomnography Sleep Monitoring/Polysomnography/Respiratory Event Counts
canop
Total number of central apnea in NREM sleep in non-supine position: Central apneas with no oxygen desaturation threshold used and with or without arousal from type I polysomnography
Total number of central apnea in NREM sleep in non-supine position: Central apneas with no oxygen desaturation threshold used and with or without arousal from type I polysomnography Sleep Monitoring/Polysomnography/Respiratory Event Counts
carbp
Total number of central apnea in REM sleep in supine position: Central apneas with no oxygen desaturation threshold used and with or without arousal from type I polysomnography
Total number of central apnea in REM sleep in supine position: Central apneas with no oxygen desaturation threshold used and with or without arousal from type I polysomnography Sleep Monitoring/Polysomnography/Respiratory Event Counts
carop
Total number of central apnea in REM sleep in non-supine position: Central apneas with no oxygen desaturation threshold used and with or without arousal from type I polysomnography
Total number of central apnea in REM sleep in non-supine position: Central apneas with no oxygen desaturation threshold used and with or without arousal from type I polysomnography Sleep Monitoring/Polysomnography/Respiratory Event Counts
hnrba3
Total number of hypopnea in NREM sleep in supine position: Hypopneas with >= 3% oxygen desaturation or with arousal from type I polysomnography
Total number of hypopnea in NREM sleep in supine position: Hypopneas with >= 3% oxygen desaturation or with arousal from type I polysomnography Sleep Monitoring/Polysomnography/Respiratory Event Counts
hnrba4
Total number of hypopnea in NREM sleep in supine position: Hypopneas with >= 4% oxygen desaturation or with arousal from type I polysomnography
Total number of hypopnea in NREM sleep in supine position: Hypopneas with >= 4% oxygen desaturation or with arousal from type I polysomnography Sleep Monitoring/Polysomnography/Respiratory Event Counts
hnrbp3
Total number of hypopnea in NREM sleep in supine position : Hypopneas with > 30% flow reduction and with >= 3% oxygen desaturation and with or without arousal from type I polysomnography
Total number of hypopnea in NREM sleep in supine position : Hypopneas with > 30% flow reduction and with >= 3% oxygen desaturation and with or without arousal from type I polysomnography Sleep Monitoring/Polysomnography/Respiratory Event Counts
hnrbp4
Total number of hypopnea in NREM sleep in supine position : Hypopneas with > 30% flow reduction and with >= 4% oxygen desaturation and with or without arousal from type I polysomnography
Total number of hypopnea in NREM sleep in supine position : Hypopneas with > 30% flow reduction and with >= 4% oxygen desaturation and with or without arousal from type I polysomnography Sleep Monitoring/Polysomnography/Respiratory Event Counts
hnroa3
Total number of hypopnea in NREM sleep in non-supine position : hypopneas with > 30% flow reduction and with >= 3% oxygen desaturation or with arousal from type I polysomnography
Total number of hypopnea in NREM sleep in non-supine position : hypopneas with > 30% flow reduction and with >= 3% oxygen desaturation or with arousal from type I polysomnography Sleep Monitoring/Polysomnography/Respiratory Event Counts
hnroa4
Total number of hypopnea in NREM sleep in non-supine position : hypopneas with > 30% flow reduction and with >= 4% oxygen desaturation or with arousal from type I polysomnography
Total number of hypopnea in NREM sleep in non-supine position : hypopneas with > 30% flow reduction and with >= 4% oxygen desaturation or with arousal from type I polysomnography Sleep Monitoring/Polysomnography/Respiratory Event Counts
hnrop3
Total number of hypopnea in NREM sleep in non-supine position : hypopneas with > 30% flow reduction and with >= 3% oxygen desaturation and with or without arousal from type I polysomnography
Total number of hypopnea in NREM sleep in non-supine position : hypopneas with > 30% flow reduction and with >= 3% oxygen desaturation and with or without arousal from type I polysomnography Sleep Monitoring/Polysomnography/Respiratory Event Counts
hnrop4
Total number of hypopnea in NREM sleep in non-supine position : hypopneas with > 30% flow reduction and with >= 4% oxygen desaturation and with or without arousal from type I polysomnography
Total number of hypopnea in NREM sleep in non-supine position : hypopneas with > 30% flow reduction and with >= 4% oxygen desaturation and with or without arousal from type I polysomnography Sleep Monitoring/Polysomnography/Respiratory Event Counts
hremba3
Total number of hypopnea in REM sleep in supine position: Hypopneas with >= 3% oxygen desaturation or with arousal from type I polysomnography
Total number of hypopnea in REM sleep in supine position: Hypopneas with >= 3% oxygen desaturation or with arousal from type I polysomnography Sleep Monitoring/Polysomnography/Respiratory Event Counts
hremba4
Total number of hypopnea in REM sleep in supine position: Hypopneas with >= 4% oxygen desaturation or with arousal from type I polysomnography
Total number of hypopnea in REM sleep in supine position: Hypopneas with >= 4% oxygen desaturation or with arousal from type I polysomnography Sleep Monitoring/Polysomnography/Respiratory Event Counts
hrembp3
Total number of hypopnea in REM sleep in supine position : Hypopneas with > 30% flow reduction and with >= 3% oxygen desaturation and with or without arousal from type I polysomnography
Total number of hypopnea in REM sleep in supine position : Hypopneas with > 30% flow reduction and with >= 3% oxygen desaturation and with or without arousal from type I polysomnography Sleep Monitoring/Polysomnography/Respiratory Event Counts
hrembp4
Total number of hypopnea in REM sleep in supine position : Hypopneas with > 30% flow reduction and with >= 4% oxygen desaturation and with or without arousal from type I polysomnography
Total number of hypopnea in REM sleep in supine position : Hypopneas with > 30% flow reduction and with >= 4% oxygen desaturation and with or without arousal from type I polysomnography Sleep Monitoring/Polysomnography/Respiratory Event Counts
hroa3
Total number of hypopnea in REM sleep in non-supine position : hypopneas with > 30% flow reduction and with >= 3% oxygen desaturation or with arousal from type I polysomnography
Total number of hypopnea in REM sleep in non-supine position : hypopneas with > 30% flow reduction and with >= 3% oxygen desaturation or with arousal from type I polysomnography Sleep Monitoring/Polysomnography/Respiratory Event Counts
hroa4
Total number of hypopnea in REM sleep in non-supine position : hypopneas with > 30% flow reduction and with >= 4% oxygen desaturation or with arousal from type I polysomnography
Total number of hypopnea in REM sleep in non-supine position : hypopneas with > 30% flow reduction and with >= 4% oxygen desaturation or with arousal from type I polysomnography Sleep Monitoring/Polysomnography/Respiratory Event Counts
hrop3
Total number of hypopnea in REM sleep in non-supine position : hypopneas with > 30% flow reduction and with >= 3% oxygen desaturation and with or without arousal from type I polysomnography
Total number of hypopnea in REM sleep in non-supine position : hypopneas with > 30% flow reduction and with >= 3% oxygen desaturation and with or without arousal from type I polysomnography Sleep Monitoring/Polysomnography/Respiratory Event Counts
hrop4
Total number of hypopnea in REM sleep in non-supine position : hypopneas with > 30% flow reduction and with >= 4% oxygen desaturation and with or without arousal from type I polysomnography
Total number of hypopnea in REM sleep in non-supine position : hypopneas with > 30% flow reduction and with >= 4% oxygen desaturation and with or without arousal from type I polysomnography Sleep Monitoring/Polysomnography/Respiratory Event Counts
oanbp
Total number of obstructive apnea in NREM sleep in supine position: Obstructive apneas with no oxygen desaturation threshold used and with or without arousal from type I polysomnography
Total number of obstructive apnea in NREM sleep in supine position: Obstructive apneas with no oxygen desaturation threshold used and with or without arousal from type I polysomnography Sleep Monitoring/Polysomnography/Respiratory Event Counts
oanop
Total number of obstructive apnea in NREM sleep in non-supine position: Obstructive apneas with no oxygen desaturation threshold used and with or without arousal from type I polysomnography
Total number of obstructive apnea in NREM sleep in non-supine position: Obstructive apneas with no oxygen desaturation threshold used and with or without arousal from type I polysomnography Sleep Monitoring/Polysomnography/Respiratory Event Counts
oarbp
Total number of obstructive apnea in REM sleep in supine position: Obstructive apneas with no oxygen desaturation threshold used and with or without arousal from type I polysomnography
Total number of obstructive apnea in REM sleep in supine position: Obstructive apneas with no oxygen desaturation threshold used and with or without arousal from type I polysomnography Sleep Monitoring/Polysomnography/Respiratory Event Counts
oarop
Total number of obstructive apnea in REM sleep in non-supine position: Obstructive apneas with no oxygen desaturation threshold used and with or without arousal from type I polysomnography
Total number of obstructive apnea in REM sleep in non-supine position: Obstructive apneas with no oxygen desaturation threshold used and with or without arousal from type I polysomnography Sleep Monitoring/Polysomnography/Respiratory Event Counts
apnhyppr
PSG Quality Assessment: Apnea/Hypopnea scoring problems
PSG Quality Assessment: Apnea/Hypopnea scoring problems

Due to signal problems, scorer was unable to reliably distinguish between apnea and hypopnea events. The distinction between apnea and hypopnea was determined to be unreliable.

Sleep Monitoring/Polysomnography/Signal Quality
arunrel
PSG Quality Assessment: Arousals unreliable
PSG Quality Assessment: Arousals unreliable

Due to signal problems, scorer was unable to reliably assess arousals. The scoring of arousals was determined to be unreliable.

Sleep Monitoring/Polysomnography/Signal Quality
overall
Overall Study Grade
Overall Study Grade Sleep Monitoring/Polysomnography/Signal Quality
remarunrel
PSG Quality Assessment: Arousals unreliable (REM)
PSG Quality Assessment: Arousals unreliable (REM)

Due to signal problems, scorer was unable to reliably assess arousals in stage REM. The scoring of arousals in stage REM was determined to be unreliable.

Sleep Monitoring/Polysomnography/Signal Quality
remnrempr
PSG Quality Assessment: REM/NREM Scoring unreliable
PSG Quality Assessment: REM/NREM Scoring unreliable

Scorer noted that there was a problem differentiating REM and non-REM sleep.

Sleep Monitoring/Polysomnography/Signal Quality
respevpr
PSG Quality Assessment: Respiratory scoring problems
PSG Quality Assessment: Respiratory scoring problems

Due to signal problems, scorer noted that there was a problem scoring respiratory events.

Sleep Monitoring/Polysomnography/Signal Quality
slewake
PSG Quality Assessment: Sleep Wake Scoring
PSG Quality Assessment: Sleep Wake Scoring

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.(0=no (full scoring); 1=yes (sleep/wake only))

Sleep Monitoring/Polysomnography/Signal Quality
stg1stg2pr
PSG Quality Assessment: Stage1/Stage2 Scoring unreliable
PSG Quality Assessment: Stage1/Stage2 Scoring unreliable

Scorer noted that there was a problem differentiating stage 1 and stage 2 sleep.

Sleep Monitoring/Polysomnography/Signal Quality
stg2stg3pr
PSG Quality Assessment: Stage2/Stage3-4 Scoring unreliable
PSG Quality Assessment: Stage2/Stage3-4 Scoring unreliable

Scorer noted that there was a problem differentiating stage 2 and stage 3/4 sleep.

Sleep Monitoring/Polysomnography/Signal Quality
pctlt70
Percentage duration of sleep with oxygen saturation < 70% from type I polysomnography
Percentage duration of sleep with oxygen saturation < 70% from type I polysomnography

Ratio of the number of minutes with oxygen saturation (SaO2) under 70% to the total sleep time expressed in hours.

Sleep Monitoring/Polysomnography/Sleep Architecture
pctlt75
Percentage duration of sleep with oxygen saturation < 75% from type I polysomnography
Percentage duration of sleep with oxygen saturation < 75% from type I polysomnography

Ratio of the number of minutes with oxygen saturation (SaO2) under 75% to the total sleep time expressed in hours.

Sleep Monitoring/Polysomnography/Sleep Architecture
pctlt80
Percentage duration of sleep with oxygen saturation < 80% from type I polysomnography
Percentage duration of sleep with oxygen saturation < 80% from type I polysomnography

Ratio of the number of minutes with oxygen saturation (SaO2) under 80% to the total sleep time expressed in hours.

Sleep Monitoring/Polysomnography/Sleep Architecture
pctlt85
Percentage duration of sleep with oxygen saturation < 85% from type I polysomnography
Percentage duration of sleep with oxygen saturation < 85% from type I polysomnography

Ratio of the number of minutes with oxygen saturation (SaO2) under 85% to the total sleep time expressed in hours.

Sleep Monitoring/Polysomnography/Sleep Architecture
pctlt95
Percentage duration of sleep with oxygen saturation < 95% from type I polysomnography
Percentage duration of sleep with oxygen saturation < 95% from type I polysomnography

Ratio of the number of minutes with oxygen saturation (SaO2) under 95% to the total sleep time expressed in hours.

Sleep Monitoring/Polysomnography/Sleep Architecture
timerem
Total Sleep Duration (REM): the interval between sleep onset time and lights on/out-bed time while the participant is in REM sleep from type I polysomnography
Total Sleep Duration (REM): the interval between sleep onset time and lights on/out-bed time while the participant is in REM sleep from type I polysomnography

Total time scored as rapid eye movement sleep (REM) rounded to nearest minute

Sleep Monitoring/Polysomnography/Sleep Architecture
timeremp
Percentage of REM sleep among total sleep duration from type I polysomnography
Percentage of REM sleep among total sleep duration from type I polysomnography

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

[100*(number of minutes scored as REM) / (total sleep time)] * 100

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

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

[100*(number of minutes scored as stage 3-4 sleep)/(total sleep time)]

Sleep Monitoring/Polysomnography/Sleep Architecture
timest1
Total duration of sleep in stage 1 sleep from type I polysomnography
Total duration of sleep in stage 1 sleep from type I polysomnography

Total time scored as stage 1 sleep rounded to nearest minute

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).

[100*(number of minutes scored as stage 1 sleep)/(total sleep time)]

Sleep Monitoring/Polysomnography/Sleep Architecture
timest2
Total duration of sleep in stage 2 sleep from type I polysomnography
Total duration of sleep in stage 2 sleep from type I polysomnography

Total time scored as stage 2 sleep rounded to nearest minute

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).

[100*(number of minutes scored as stage 2 sleep)/(total sleep time)]

Sleep Monitoring/Polysomnography/Sleep Architecture
timest34
Total duration of sleep in stage 3/4 sleep from type I polysomnography
Total duration of sleep in stage 3/4 sleep from type I polysomnography

Total time scored as stage 3/4 sleep rounded to nearest minute

Sleep Monitoring/Polysomnography/Sleep Architecture