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Percent of the total sleep duration with oxygen saturation below 90% from type I polysomnography
pctsa90h under Sleep Monitoring/Polysomnography/Sleep Architecture in CFS variables
Conventionally, total sleep duration would be called total sleep time (TST).
Sleep Efficiency: the ratio of sleep duration (i.e. total sleep time) to in-bed period from type I polysomnography
slpeffp under Sleep Monitoring/Polysomnography/Sleep Architecture in CFS variables
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).
Percentage of REM sleep among total sleep duration from type I polysomnography
timeremp under Sleep Monitoring/Polysomnography/Sleep Architecture in CFS variables
Conventionally, total sleep duration would be called total sleep time (TST).
Percentage of stage 1 sleep among total sleep duration from type I polysomnography
timest1p under Sleep Monitoring/Polysomnography/Sleep Architecture in CFS variables
Conventionally, total sleep duration would be called total sleep time (TST).
Percentage of stage 2 sleep among total sleep duration from type I polysomnography
timest2p under Sleep Monitoring/Polysomnography/Sleep Architecture in CFS variables
Conventionally, total sleep duration would be called total sleep time (TST).
Calculated sleep duration on weekdays
dayslp_dur_hr under Sleep Questionnaires/Sleep Habits in CFS variables
The difference between DAYSLP (self-reported sleep time) and DAYWAKE (self-reported wake time). The value will be missing if either DAYSLP or DAYWAKE are missing.
Calculated sleep duration on weekdays
dayslp_dur_mn under Sleep Questionnaires/Sleep Habits in CFS variables
The difference between DAYSLP (self-reported sleep time) and DAYWAKE (self-reported wake time).
Calculated sleep duration on weekends
endslp_dur_hr under Sleep Questionnaires/Sleep Habits in CFS variables
The difference between ENDSLP (self-reported sleep time) and ENDWAKE (self-reported wake time).
Calculated sleep duration on weekends
endslp_dur_mn under Sleep Questionnaires/Sleep Habits in CFS variables
The difference between ENDSLP (self-reported sleep time) and ENDWAKE (self-reported wake time).
Calculated sleep duration on all days
sleeptime_hr under Sleep Questionnaires/Sleep Habits in CFS variables
Calculated sleep duration on all days
sleeptime_min under Sleep Questionnaires/Sleep Habits in CFS variables
Sleep Efficiency: the proportion of estimated sleep duration in in-bed period from type II polysomnography
poslpeff under Sleep Monitoring/Polysomnography/Sleep Architecture in MROS variables
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).
P wave duration
pdur under Clinical Data/Diagnostic Studies/Electrocardiogram in HEARTBEAT variables
Duration of atrial depolarization
QRS complex duration
qrsdur under Clinical Data/Diagnostic Studies/Electrocardiogram in HEARTBEAT variables
duration from the end of the PR interval to the end of the S wave
Apnea-Hypopnea Index: (Apneas with no oxygen desaturation threshold used + hypopneas with > 50% flow reduction and >= 3% oxygen desaturation) / hours of estimated sleep from type III home sleep apnea test
ahi_screening under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in HEARTBEAT variables
Calculated - Summary metric of sleep disordered breathing events from the baseline screening visit.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)There is a HeartBEAT specific respiratory event index measure :aphypi:. Details can be found in the Embletta scoring manual.
Respiratory Event Index: (All respiratory events with at least 50% flow reduction and without any oxygen desaturation threshold used) / hours of estimated sleep from type III home sleep apnea test
aphypi under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in HEARTBEAT variables
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) Details about how the respiratory events were scored can be found in the Embletta scoring manual. Please refer to :ahi_screening: from the baseline screening visit for a more standardized version of AHI in this study.
Respiratory Event Index (Non-Supine): (All respiratory events with at least 50% flow reduction and without any oxygen desaturation threshold used) / hours of estimated sleep in non-supine position from type III home sleep apnea test
aphypins under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in HEARTBEAT variables
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) Details about how the respiratory events were scored can be found in the Embletta scoring manual. Please refer to :ahi_screening: from the baseline screening visit for a more standardized version of AHI in this study.
Respiratory Event Index (Supine): (All respiratory events with at least 50% flow reduction and without any oxygen desaturation threshold used) / hours of estimated sleep in supine position from type III home sleep apnea test
aphypis under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in HEARTBEAT variables
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) Details about how the respiratory events were scored can be found in the Embletta scoring manual. Please refer to :ahi_screening: from the baseline screening visit for a more standardized version of AHI in this study.
Average heart rate during estimated sleep in non-supine position from type III home sleep apnea test
avgbpn under Sleep Monitoring/Polysomnography/Heart Rate in HEARTBEAT variables
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)
Average heart rate during estimated sleep in supine position from type III home sleep apnea test
avgbps under Sleep Monitoring/Polysomnography/Heart Rate in HEARTBEAT variables
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)
Maximum heart rate during estimated sleep in non-supine position from type III home sleep apnea test
maxbpn under Sleep Monitoring/Polysomnography/Heart Rate in HEARTBEAT variables
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)
Maximum heart rate during estimated sleep in supine position from type III home sleep apnea test
maxbps under Sleep Monitoring/Polysomnography/Heart Rate in HEARTBEAT variables
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)
Minimum heart rate during estimated sleep in non-supine position from type III home sleep apnea test
minbpn under Sleep Monitoring/Polysomnography/Heart Rate in HEARTBEAT variables
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)
Minimum heart rate during estimated sleep in supine position from type III home sleep apnea test
minbps under Sleep Monitoring/Polysomnography/Heart Rate in HEARTBEAT variables
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)
Standard deviation of heart rate during estimated sleep in non-supine position from type III home sleep apnea test
stdbpn under Sleep Monitoring/Polysomnography/Heart Rate in HEARTBEAT variables
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)
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