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Percentage of Total Sleep Time (TST) where end-tidal carbon dioxide (ETCO2) > 45 millimeters (mm) mercury (Hg)
rpctco2g45
under Sleep Monitoring/Polysomnography/Capnography in
CHAT variables
Percentage of Total Sleep Time (TST) where end-tidal carbon dioxide (ETCO2) > 50 millimeters (mm) mercury (Hg)
rpctco2g50
under Sleep Monitoring/Polysomnography/Capnography in
CHAT variables
Percentage of sleep time oxygen saturation (SaO2) is <= 90% change between baseline and follow-up
chg_pctsa90
under Sleep Monitoring/Polysomnography/Oxygen Saturation in
CHAT variables
Percentage of sleep time oxygen saturation (SaO2) is <= 95% change between baseline and follow-up
chg_pctsa95
under Sleep Monitoring/Polysomnography/Oxygen Saturation in
CHAT variables
Urgent referral - oxygen saturation (SaO2) <90% >2% sleep time = 1 urgent ineligible
sa02lt90
under Sleep Monitoring/Polysomnography/Signal Quality in
CHAT variables
*Note studies that have oximetry problems here
Urgent referral - oxygen saturation (SaO2) <92% >2% sleep time = 1 Surgeon alert
sa02lt92
under Sleep Monitoring/Polysomnography/Signal Quality in
CHAT variables
*Note studies that have oximetry problems here
Study scored sleep wake = 1, all sleep scored stage 2
slewake
under Sleep Monitoring/Polysomnography/Signal Quality in
CHAT variables
1=Study scored sleep wake
Scoring stage wake/sleep unreliable
wakslepr
under Sleep Monitoring/Polysomnography/Signal Quality in
CHAT variables
1=Sleep staging problem - scoring wake/sleep unreliable (when the clarity of the EEG makes distinguishing the transition unreliable)
Percentage of sleep included in the total thoraco-abdominal asynchrony analysis
taa_total_pctst
under Sleep Monitoring/Polysomnography/Thoraco-abdominal Asynchrony in
CHAT variables
Amount of sleep included in the total thoraco-abdominal asynchrony analysis
taa_total_st
under Sleep Monitoring/Polysomnography/Thoraco-abdominal Asynchrony in
CHAT variables
Scoring REM/NREM Unreliable from type II polysomnography
remnrempr5
under Sleep Monitoring/Polysomnography/Signal Quality in
MESA variables
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