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sawa102 under Sleep Monitoring/Actigraphy in HCHS variables
Sleep duration (i.e. total sleep time) is the interval between sleep onset and sleep offset time while asleep.
sdsleepperioddurationwd5 under Sleep Monitoring/Actigraphy in MESA variables
Sleep period (i.e. total sleep time, TST) is the interval between sleep onset time and sleep offset time in main sleep.