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Polysomnography (PSG) Quality Assessment: Unusual staging
unustgou
under Sleep Monitoring/Polysomnography/Signal Quality in
SOF variables
Scorer observed unusual sleep staging. This is noted when there is no sleep in any particular stage (eg. no rapid eye movement sleep (REM)).
LOG % Total Sleep Time (TST) with carbon dioxide (CO2) > 50 millimeters (mm) mercury (Hg)
lgpctco2g50
under Sleep Monitoring/Polysomnography/Capnography in
CHAT variables
Original source: MS 003
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)
LOG % Total Sleep Time (TST) with carbon dioxide (CO2) > 50 millimeters (mm) mercury (Hg) (0 replaced with 0.0001)
lgpctco2g50_0
under Sleep Monitoring/Polysomnography/Capnography in
CHAT variables
Original source: MS 003
Average nadirs in REM sleep from type I polysomnography
saondrem
under Sleep Monitoring/Polysomnography/Oxygen Saturation in
CHAT variables
Mean oxygen saturation (SaO2) nadir in rapid eye movement sleep (REM)
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
Average thoraco-abdominal asynchrony during scored-event-free non-rapid eye movement sleep (NREM) Stage 2
taa_n2
under Sleep Monitoring/Polysomnography/Thoraco-abdominal Asynchrony in
CHAT variables
Average thoraco-abdominal asynchrony during scored-event-free non-rapid eye movement sleep (NREM) Stage 3
taa_n3
under Sleep Monitoring/Polysomnography/Thoraco-abdominal Asynchrony in
CHAT variables
Amount of rapid eye movement sleep (REM) included in the total thoraco-abdominal asynchrony analysis
taa_r_st
under Sleep Monitoring/Polysomnography/Thoraco-abdominal Asynchrony in
CHAT variables
Percentage of rapid eye movement sleep (REM) included in the total thoraco-abdominal asynchrony analysis
taa_r_pctst
under Sleep Monitoring/Polysomnography/Thoraco-abdominal Asynchrony in
CHAT variables
Percentage of Total Sleep Time (TST) end-tidal carbon dioxide (ETCO2) > 50 millimeters (mm) mercury (Hg)
pctco2g50
under Sleep Monitoring/Polysomnography/Capnography in
CHAT variables
Percentage of Total Sleep Time (TST) where end-tidal carbon dioxide (ETCO2) > 45 millimeters (mm) mercury (Hg)
pctco2g45
under Sleep Monitoring/Polysomnography/Capnography in
CHAT variables
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
minremp
under Sleep Monitoring/Polysomnography/Sleep Architecture in
CHAT variables
Total time scored as rapid eye movement sleep (REM), rounded to nearest minute (use calculated variable - sleep wake studies screened out)
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
timerem
under Sleep Monitoring/Polysomnography/Sleep Architecture in
CCSHS variables
Total time scored as rapid eye movement sleep (REM) rounded to nearest minute
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)
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)
Average end-tidal carbon dioxide (ETCO2) in rapid eye movement sleep (REM) (normalized for capnograph type)
nova_est_co2avgr
under Sleep Monitoring/Polysomnography/Capnography in
CHAT variables
Average nadirs in NREM sleep from type I polysomnography
saondnrem
under Sleep Monitoring/Polysomnography/Oxygen Saturation in
CHAT variables
Mean oxygen saturation (SaO2) nadir in non-rapid eye movement sleep (NREM)
Baseline end-tidal carbon dioxide (ETCO2) asleep
co2blslp
under Sleep Monitoring/Polysomnography/Capnography in
CHAT variables
Baseline end-tidal carbon dioxide (ETCO2) asleep
rco2blslp
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
Peak end-tidal carbon dioxide (ETCO2) asleep
rco2peak
under Sleep Monitoring/Polysomnography/Capnography in
CHAT variables
Percentage Total Sleep Time (TST) where end-tidal carbon dioxide (ETCO2) > 45 millimeters (mm) mercury (Hg) (normalized for capnograph type)
nova_est_pctco2g45
under Sleep Monitoring/Polysomnography/Capnography in
CHAT variables
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