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Average oxygen saturation in REM sleep from type I polysomnography
avsao2rh under Sleep Monitoring/Polysomnography/Oxygen Saturation in CHAT variables
The mean of all oxygen saturation values in epochs scored as stage REM.
Minimum oxygen saturation from type I polysomnography
lowsaoslp under Sleep Monitoring/Polysomnography/Oxygen Saturation in CHAT variables
Lowest oxygen saturation (SaO2) during sleep
Minimum oxygen saturation in NREM sleep from type I polysomnography
mnsao2nh under Sleep Monitoring/Polysomnography/Oxygen Saturation in CHAT variables
The minimum of all oxygen saturation values in epochs scored as stages other than REM (i.e., 1,2,3/4).
Minimum oxygen saturation in REM sleep from type I polysomnography
mnsao2rh under Sleep Monitoring/Polysomnography/Oxygen Saturation in CHAT variables
The minimum of all oxygen saturation values in epochs scored as stage REM.
Percentage duration of sleep with oxygen saturation <= 70% from type I polysomnography
pctsa70 under Sleep Monitoring/Polysomnography/Oxygen Saturation in CHAT variables
[(total time oxygen saturation (SaO2) is <= 70%) / (Total Sleep Time (TST))] * 100
Percentage duration of sleep with oxygen saturation < 70% from type I polysomnography
pctsa70h under Sleep Monitoring/Polysomnography/Oxygen Saturation in CHAT variables
[(total time oxygen saturation (SaO2) is < 70%) / (Total Sleep Time (TST))] * 100
Percentage duration of sleep with oxygen saturation <= 75% from type I polysomnography
pctsa75 under Sleep Monitoring/Polysomnography/Oxygen Saturation in CHAT variables
[(total time oxygen saturation (SaO2) is <= 75%) / (Total Sleep Time (TST))] * 100
Percentage duration of sleep with oxygen saturation < 75% from type I polysomnography
pctsa75h under Sleep Monitoring/Polysomnography/Oxygen Saturation in CHAT variables
[(total time oxygen saturation (SaO2) is < 75%) / (Total Sleep Time (TST))] * 100
Percentage duration of sleep with oxygen saturation <= 80% from type I polysomnography
pctsa80 under Sleep Monitoring/Polysomnography/Oxygen Saturation in CHAT variables
[(total time oxygen saturation (SaO2) is <= 80%) / (Total Sleep Time (TST))] * 100
Percentage duration of sleep with oxygen saturation < 80% from type I polysomnography
pctsa80h under Sleep Monitoring/Polysomnography/Oxygen Saturation in CHAT variables
[(total time oxygen saturation (SaO2) is < 80%) / (Total Sleep Time (TST))] * 100
Percentage duration of sleep with oxygen saturation <= 85% from type I polysomnography
pctsa85 under Sleep Monitoring/Polysomnography/Oxygen Saturation in CHAT variables
[(total time oxygen saturation (SaO2) is <= 85%) / (Total Sleep Time (TST))] * 100
Percentage duration of sleep with oxygen saturation < 85% from type I polysomnography
pctsa85h under Sleep Monitoring/Polysomnography/Oxygen Saturation in CHAT variables
[(total time oxygen saturation (SaO2) is < 85%) / (Total Sleep Time (TST))] * 100
Percentage duration of sleep with oxygen saturation <= 90% from type I polysomnography
pctsa90 under Sleep Monitoring/Polysomnography/Oxygen Saturation in CHAT variables
[(total time oxygen saturation (SaO2) is <= 90%) / (Total Sleep Time (TST))] * 100
Percent of the total sleep duration with oxygen saturation below 90% from type I polysomnography
pctsa90h under Sleep Monitoring/Polysomnography/Oxygen Saturation in CHAT variables
Conventionally, total sleep duration would be called total sleep time (TST).[(total time oxygen saturation (SaO2) is < 90%) / (Total Sleep Time (TST))] * 100
Percentage duration of sleep with oxygen saturation <= 92% from type I polysomnography
pctsa92 under Sleep Monitoring/Polysomnography/Oxygen Saturation in CHAT variables
[(total time oxygen saturation (SaO2) is <= 92%) / (Total Sleep Time (TST))] * 100
Percentage duration of sleep with oxygen saturation <= 95% from type I polysomnography
pctsa95 under Sleep Monitoring/Polysomnography/Oxygen Saturation in CHAT variables
[(total time oxygen saturation (SaO2) is <= 95%) / (Total Sleep Time (TST))] * 100
Percentage duration of sleep with oxygen saturation < 95% from type I polysomnography
pctsa95h under Sleep Monitoring/Polysomnography/Oxygen Saturation in CHAT variables
[(total time oxygen saturation (SaO2) is < 95%) / (Total Sleep Time (TST))] * 100
Average oxygen saturation in NREM sleep from type I polysomnography
sao2nrem under Sleep Monitoring/Polysomnography/Oxygen Saturation in CHAT variables
[mean(all oxygen saturation (SaO2) values in non-rapid eye movement sleep (NREM))]. will be missing if study scored as sleep/wake only.
Average oxygen saturation in REM sleep from type I polysomnography
sao2rem under Sleep Monitoring/Polysomnography/Oxygen Saturation in CHAT variables
[mean(all oxygen saturation (SaO2) values in rapid eye movement sleep (REM))]. will be missing if study scored as sleep/wake only.
Total duration of wake time during sleep period with oxygen saturation < 90% from type I polysomnography
sao90awk under Sleep Monitoring/Polysomnography/Oxygen Saturation in CHAT variables
Total time oxygen saturation (SaO2) < 90% in awake
Total duration of wake time during sleep period with oxygen saturation > 92% from type I polysomnography
sao92awk under Sleep Monitoring/Polysomnography/Oxygen Saturation in CHAT variables
Total time oxygen saturation (SaO2) > 92 in awake
Total duration of sleep with oxygen saturation > 92% from type I polysomnography
sao92slp under Sleep Monitoring/Polysomnography/Oxygen Saturation in CHAT variables
Total time oxygen saturation (SaO2) > 92 in sleep
Average oxygen saturation in NREM sleep from type I polysomnography
saonrem under Sleep Monitoring/Polysomnography/Oxygen Saturation in CHAT variables
Mean oxygen saturation (SaO2) during non-rapid eye movement sleep (NREM)
Average oxygen saturation in REM sleep from type I polysomnography
saorem under Sleep Monitoring/Polysomnography/Oxygen Saturation in CHAT variables
Mean oxygen saturation (SaO2) during rapid eye movement sleep (REM)
Average oxygen saturation in sleep from type I polysomnography
saoslp under Sleep Monitoring/Polysomnography/Oxygen Saturation in CHAT variables
Mean oxygen saturation (SaO2) during sleep
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