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Maternal Sleep in Pregnancy and the Fetus

Name Label Folder
remlat
REM Sleep Latency: the interval between the first sleep epoch and REM sleep including wake from type I polysomnography
REM Sleep Latency: the interval between the first sleep epoch and REM sleep including wake from type I polysomnography Sleep Monitoring/Polysomnography/Sleep Architecture
se
Sleep Efficiency: the ratio of sleep duration (i.e., total sleep time) to in-bed period (i.e., time in bed) from type I polysomnography
Sleep Efficiency: the ratio of sleep duration (i.e., total sleep time) to in-bed period (i.e., time in bed) 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). Percentage of time in bed that was spent sleeping, or the ratio of total sleep time to total time in bed, expressed as a percentage.

Sleep Monitoring/Polysomnography/Sleep Architecture
tst
Total sleep duration from type I polysomnography
Total sleep duration from type I polysomnography

Sleep duration is the interval between sleep onset time and lights on/out-bed time while asleep. Conventionally this variable would be called total sleep time (TST)(i.e. total time spent in stage 1 or greater).

Sleep Monitoring/Polysomnography/Sleep Architecture
tstdeep
Percentage of total sleep duration (i.e., total sleep time, TST) in Stage 3/4 from type I polysomnography
Percentage of total sleep duration (i.e., total sleep time, TST) in Stage 3/4 from type I polysomnography Sleep Monitoring/Polysomnography/Sleep Architecture
tstrem
Percentage of total sleep duration (i.e., total sleep time, TST) in REM from type I polysomnography
Percentage of total sleep duration (i.e., total sleep time, TST) in REM from type I polysomnography

The ratio of time in rapid eye movement sleep (REM) to total sleep time, expressed as a percentage.

Sleep Monitoring/Polysomnography/Sleep Architecture