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sawa18 under Sleep Monitoring/Actigraphy in HCHS variables
Sleep period is the interval between sleep onset and sleep offset time.This variable is similar to sawa52; however, sawa18 is generated by Actiware software before data optimization.
sawa52 under Sleep Monitoring/Actigraphy in HCHS variables
Sleep period is the interval between sleep onset and sleep offset time.This variable is similar to sawa18; however, sawa18 is generated by Actiware software before data optimization.
avgsleepperiodduration5 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.