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Fz-Cz Signal Duration (Hours) EEG from type II polysomnography

fzm1dur5 under Sleep Monitoring/Polysomnography/Signal Quality in MESA variables

Limb Signal Duration (Hours) from type II polysomnography

limbdur5 under Sleep Monitoring/Polysomnography/Signal Quality in MESA variables

C4-M1 Signal Duration (Hours) EEG from type II polysomnography

o2m1dur5 under Sleep Monitoring/Polysomnography/Signal Quality in MESA variables

Spo2 Signal Duration (Hours) from type II polysomnography

oximdur5 under Sleep Monitoring/Polysomnography/Signal Quality in MESA variables

Pleth Signal Duration (Hours) from type II polysomnography

plethdur5 under Sleep Monitoring/Polysomnography/Signal Quality in MESA variables

Cannula Flow Signal Duration (Hours) from type II polysomnography

xflowdur5 under Sleep Monitoring/Polysomnography/Signal Quality in MESA variables

Total Sleep Duration: the interval between sleep onset and sleep offset while the participant is asleep from type II polysomnography

slpprdp5 under Sleep Monitoring/Polysomnography/Sleep Architecture in MESA variables

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

Percentage of total sleep duration in supine position from type II polysomnography

supinep5 under Sleep Monitoring/Polysomnography/Sleep Architecture in MESA variables

Total duration of REM sleep from type II polysomnography

timerem5 under Sleep Monitoring/Polysomnography/Sleep Architecture in MESA variables

Percentage of total sleep duration in REM from type II polysomnography

timeremp5 under Sleep Monitoring/Polysomnography/Sleep Architecture in MESA variables

Percentage of total sleep duration in Stage 3 and 4 from type II polysomnography

times34p5 under Sleep Monitoring/Polysomnography/Sleep Architecture in MESA variables

Total duration of Stage 1 sleep from type II polysomnography

timest15 under Sleep Monitoring/Polysomnography/Sleep Architecture in MESA variables

Percentage of total sleep duration in Stage 1 from type II polysomnography

timest1p5 under Sleep Monitoring/Polysomnography/Sleep Architecture in MESA variables

Total duration of Stage 2 sleep from type II polysomnography

timest25 under Sleep Monitoring/Polysomnography/Sleep Architecture in MESA variables

Percentage of total sleep duration in Stage 2 from type II polysomnography

timest2p5 under Sleep Monitoring/Polysomnography/Sleep Architecture in MESA variables

Total duration of Stage 3 and 4 sleep from type II polysomnography

timest345 under Sleep Monitoring/Polysomnography/Sleep Architecture in MESA variables

Wake after Sleep Onset: the total duration between sleep onset and sleep offset time while being awake from type II polysomnography

waso5 under Sleep Monitoring/Polysomnography/Sleep Architecture in MESA variables

Percentage of total sleep duration (i.e., total sleep time, TST) in stage 1 from polysomnography

nsrr_pctdursp_s1 under Harmonized/Polysomnography/Sleep Architecture in APOE variables

Harmonized by the NSRR team. Source: :pct_s1:

Percentage of total sleep duration (i.e., total sleep time, TST) in stage 2 from polysomnography

nsrr_pctdursp_s2 under Harmonized/Polysomnography/Sleep Architecture in APOE variables

Harmonized by the NSRR team. Source: :pct_s2:

Percentage of total sleep duration (i.e., total sleep time, TST) in stage 3/4 from polysomnography

nsrr_pctdursp_s3 under Harmonized/Polysomnography/Sleep Architecture in APOE variables

Harmonized by the NSRR team. Source: :pct_s3:

Percentage of total sleep duration (i.e., total sleep time, TST) in REM from polysomnography

nsrr_pctdursp_sr under Harmonized/Polysomnography/Sleep Architecture in APOE variables

Harmonized by the NSRR team. Source: :pct_sr:

Total Sleep Duration: the interval between sleep onset and sleep offset while the participant is asleep from polysomnography

nsrr_tst_f1 under Harmonized/Polysomnography/Sleep Architecture in APOE variables

Conventionally, this would be called total sleep time (TST) (i.e., total time spent in stage 1 or greater).Harmonized by the NSRR team. Source: :tst:

Sleep Efficiency: the ratio of total sleep duration (i.e., total sleep time) to in-bed period (i.e., time in bed) from polysomnography

nsrr_ttleffsp_f1 under Harmonized/Polysomnography/Sleep Architecture in APOE variables

Harmonized by the NSRR team. Source: :sleep_efficiency:

Total period of recording from type I polysomnography

psg_duration under Sleep Monitoring/Polysomnography/Sleep Architecture in APOE variables

Total Sleep Duration: the interval between sleep onset time and lights on/out-bed time while the participant is asleep from type I polysomnography

tst under Sleep Monitoring/Polysomnography/Sleep Architecture in APOE variables

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