AvgEffSp_im_w7_f2 - Search - Sleep Data - National Sleep Research Resource

Average daily sleep efficiency across all days from actigraphy

sawa21 under Sleep Monitoring/Actigraphy in HCHS variables

This variable is similar to the calculated variable sawa60; however, sawa21 is generated automatically by Actiware before data optimization.

Average daily sleep efficiency across all days from actigraphy

sawa60 under Sleep Monitoring/Actigraphy in HCHS variables

This variable is similar to sawa21; however, sawa21 is generated automatically by Actiware before data optimization.

Average proportion of rest interval spent asleep over nighttime periods

avgsleepefficiency_act_night under Sleep Monitoring/Actigraphy in SHINE variables

Variable sourced from actigraphy data

Average daily sleep efficiency in all days from actigraphy

avgefficiency5 under Sleep Monitoring/Actigraphy in MESA variables

Sleep efficiency is the proportion of sleep duration (i.e. total sleep time, tst) in total rest period (i.e. rest interval) in main sleep. Sleep duration is the interval between sleep onset time and sleep offset time while asleep. In this study, rest interval is the same as in-bed period.