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Wisconsin Sleep Cohort

Name Label Folder
ahi
Apnea-Hypopnea Index: (Apneas with no oxygen desaturation threshold used and with or without arousal and hypopneas with discernible flow reduction and with >= 4% oxygen desaturation and with or without arousal) / hours of sleep from type I polysomnography
Apnea-Hypopnea Index: (Apneas with no oxygen desaturation threshold used and with or without arousal and hypopneas with discernible flow reduction and with >= 4% oxygen desaturation and with or without arousal) / hours of sleep from type I polysomnography

Calculated - Summary metric of sleep disordered breathing events

Sleep Monitoring/Polysomnography
minsao2tst
Minimum level of oxygen saturation in total sleep duration from type I polysomnography
Minimum level of oxygen saturation in total sleep duration from type I polysomnography

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

Sleep Monitoring/Polysomnography
ptstl90
Percent of the total sleep duration with oxygen saturation below 90% from type I polysomnography
Percent of the total sleep duration with oxygen saturation below 90% from type I polysomnography

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

Sleep Monitoring/Polysomnography
se
Sleep Efficiency: the proportion of sleep duration in in-bed period from type I polysomnography
Sleep Efficiency: the proportion of sleep duration in 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).

Sleep Monitoring/Polysomnography
tst
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).

Sleep Monitoring/Polysomnography
waso
Wake After Sleep Onset: the total duration between sleep onset and lights-on/out-bed time while being awake from type I polysomnography
Wake After Sleep Onset: the total duration between sleep onset and lights-on/out-bed time while being awake from type I polysomnography Sleep Monitoring/Polysomnography
avgo2sattst
Average oxygen saturation in total sleep duration from type I polysomnography
Average oxygen saturation in total sleep duration from type I polysomnography

Conventionally, total sleep duration would be called total sleep time (TST) (i.e. total time spent in stage 1 or greater).

Sleep Monitoring/Polysomnography
mean_desat_dur
Average Duration of Apnea and Hypopnea Event: (Apneas with no oxygen desaturation threshold used and with or without arousal and hypopneas with discernible flow reduction and with >= 4% oxygen desaturation and with or without arousal) from type I polysomnography
Average Duration of Apnea and Hypopnea Event: (Apneas with no oxygen desaturation threshold used and with or without arousal and hypopneas with discernible flow reduction and with >= 4% oxygen desaturation and with or without arousal) from type I polysomnography Sleep Monitoring/Polysomnography
mean_desat_perc
Average Level of Oxygen Desaturation of Apnea and Hypopnea Event: (Apneas with no oxygen desaturation threshold used and with or without arousal and hypopneas with discernible flow reduction and with >= 4% oxygen desaturation and with or without arousal) from type I polysomnography
Average Level of Oxygen Desaturation of Apnea and Hypopnea Event: (Apneas with no oxygen desaturation threshold used and with or without arousal and hypopneas with discernible flow reduction and with >= 4% oxygen desaturation and with or without arousal) from type I polysomnography Sleep Monitoring/Polysomnography
nremahi
Apnea-Hypopnea Index (NREM): (Apneas with no oxygen desaturation threshold used and with or without arousal and hypopneas with discernible flow reduction and with >= 3% oxygen desaturation and with or without arousal)/ hours of NREM sleep from type I polysomnography
Apnea-Hypopnea Index (NREM): (Apneas with no oxygen desaturation threshold used and with or without arousal and hypopneas with discernible flow reduction and with >= 3% oxygen desaturation and with or without arousal)/ hours of NREM sleep from type I polysomnography

Calculated - Summary metric of sleep disordered breathing events during NREM sleep

Sleep Monitoring/Polysomnography
pcttstrem
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).

Sleep Monitoring/Polysomnography
pcttststage12
Percentage of stage 1 and 2 sleep among total sleep duration from type I polysomnography
Percentage of stage 1 and 2 sleep among total sleep duration from type I polysomnography

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

Sleep Monitoring/Polysomnography
pcttststage34
Percentage of stage 3 and 4 sleep among total sleep duration from type I polysomnography
Percentage of stage 3 and 4 sleep among total sleep duration from type I polysomnography

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

Sleep Monitoring/Polysomnography
pcttststagen1
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).

Sleep Monitoring/Polysomnography
pcttststagen2
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).

Sleep Monitoring/Polysomnography
remahi
Apnea-Hypopnea Index (REM): (Apneas with no oxygen desaturation threshold used and with or without arousal and hypopneas with discernible flow reduction and with >= 3% oxygen desaturation and with or without arousal)/ hours of REM sleep from type I polysomnography
Apnea-Hypopnea Index (REM): (Apneas with no oxygen desaturation threshold used and with or without arousal and hypopneas with discernible flow reduction and with >= 3% oxygen desaturation and with or without arousal)/ hours of REM sleep from type I polysomnography

Calculated - Summary metric of sleep disordered breathing events during REM sleep

Sleep Monitoring/Polysomnography
rem_latency
Sleep Latency (REM): the interval between lights-out/in-bed time and the first epoch of REM sleep. from type I polysomnography
Sleep Latency (REM): the interval between lights-out/in-bed time and the first epoch of REM sleep. from type I polysomnography

Time to first epoch of REM sleep

Sleep Monitoring/Polysomnography
sleep_latency
Sleep Latency: the interval between lights-out/in-bed time and sleep onset time. from type I polysomnography
Sleep Latency: the interval between lights-out/in-bed time and sleep onset time. from type I polysomnography Sleep Monitoring/Polysomnography
tst_nrem
Total Sleep Duration (NREM): the interval between sleep onset time and lights on/out-bed time while the participant is in NREM sleep from type I polysomnography
Total Sleep Duration (NREM): the interval between sleep onset time and lights on/out-bed time while the participant is in NREM sleep from type I polysomnography

Total time spent in NREM sleep

Sleep Monitoring/Polysomnography
tst_rem
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 spent in REM sleep

Sleep Monitoring/Polysomnography
psg_cpap
Reported use of CPAP at at time of nPSG
Reported use of CPAP at at time of nPSG Sleep Monitoring/Polysomnography/Administrative
psg_oxygen
Reported use of Oxygen at time of nPSG
Reported use of Oxygen at time of nPSG Sleep Monitoring/Polysomnography/Administrative
psg_source
Source of GRASS nPSG data
Source of GRASS nPSG data Sleep Monitoring/Polysomnography/Administrative
a_eval_hour
Self report sleep duration the morning after type I polysomnography
Self report sleep duration the morning after type I polysomnography

About how many hours of restful sleep do you feel you got last night?

Sleep Monitoring/Polysomnography/Evening and Morning Survey
a_eval_sleep
Stanford sleepiness scale the morning after type I polysomnography
Stanford sleepiness scale the morning after type I polysomnography

Finally, we would like you to rate how sleepy you feel right now, just as you did last night before sleep. The scale ranges from 1 to 7, with 7 being the most sleepy. Please read the entire scale below and then check the level that best describes your current state of sleepiness.

Sleep Monitoring/Polysomnography/Evening and Morning Survey
a_eval_slept
Self-reported sleep quality the morning after type I polysomnography
Self-reported sleep quality the morning after type I polysomnography

How well did you sleep last night? (Please check one)

Sleep Monitoring/Polysomnography/Evening and Morning Survey
p_eval_sleep
Stanford sleepiness scale before type I polysomnography
Stanford sleepiness scale before type I polysomnography

This question refers to how sleepy or alert you feel at a particular time. We would like you to read the scale below and then rate how sleepy you feel right now. The scale ranges from 1 to 7, with 7 being the most sleepy. Please read the entire scale, and then check the level that best describes your current state of sleepiness.

Sleep Monitoring/Polysomnography/Evening and Morning Survey