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Beginning(start) point time for bed (in-bed) from type II polysomnography

postlotp under Sleep Monitoring/Polysomnography/Sleep Architecture in MROS variables

Lights out time

Clock time when the participant is in bed or lights are out from type II polysomnography

stloutp under Sleep Monitoring/Polysomnography/Sleep Architecture in SOF variables

Clock time when the participant is in bed or lights are out from type II polysomnography

stloutp under Sleep Monitoring/Polysomnography/Sleep Architecture in SHHS variables

Conventionally, this variable would be called the start of time in bed (TIB). In Visit 1 this variable represents the number of epochs from recording start.

Clock time when the participant is in bed or lights are out from type II polysomnography

stloutp5 under Sleep Monitoring/Polysomnography/Sleep Architecture in MESA variables

Conventionally, this variable would be called the start of time in bed (TIB).