Sleep Monitoring - HCHS Variables - Sleep Data - National Sleep Research Resource - NSRR

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	Name	Label	Folder
	sawa285 Average daily duration of rest period in main sleep over all reliable days from actigraphy	Average daily duration of rest period in main sleep over all reliable days from actigraphy Rest period is the interval between the start and end of the rest interval, used in actigraphy.	Sleep Monitoring/Actigraphy
	sawa286 Standard deviation of the daily rest period in main sleep over all reliable days from actigraphy	Standard deviation of the daily rest period in main sleep over all reliable days from actigraphy Rest period is the interval between the start and end of the rest interval, used in actigraphy.	Sleep Monitoring/Actigraphy
	sawa287 Average daily duration of sleep period in main sleep over all reliable days from actigraphy	Average daily duration of sleep period in main sleep over all reliable days from actigraphy Sleep period is the interval between sleep onset and sleep offset time.	Sleep Monitoring/Actigraphy
	sawa288 Standard deviation of the daily sleep period in main sleep over all reliable days from actigraphy	Standard deviation of the daily sleep period in main sleep over all reliable days from actigraphy Sleep period is the interval between sleep onset and sleep offset time.	Sleep Monitoring/Actigraphy
	sawa289 Average daily sleep duration in main sleep over all reliable days from actigraphy	Average daily sleep duration in main sleep over all reliable days from actigraphy Sleep duration (i.e. total sleep time) is the interval between sleep onset and sleep offset time while asleep.	Sleep Monitoring/Actigraphy
	sawa29 Standard deviation of the daily sleep period across all days from actigraphy	Standard deviation of the daily sleep period across all days from actigraphy Sleep period is the interval between sleep onset and sleep offset time. This variable is similar to sawa53; however, sawa29 is generated by Actiware software before data optimization.	Sleep Monitoring/Actigraphy
	sawa290 Standard deviation of the daily sleep duration in main sleep over all reliable days from actigraphy	Standard deviation of the daily sleep duration in main sleep over all reliable days from actigraphy Sleep duration (i.e. total sleep time) is the interval between sleep onset and sleep offset time while asleep.	Sleep Monitoring/Actigraphy
	sawa291 Average daily sleep latency sleep in main sleep over all reliable days from actigraphy	Average daily sleep latency sleep in main sleep over all reliable days from actigraphy	Sleep Monitoring/Actigraphy
	sawa292 Average daily duration of WASO (wake after sleep onset) in main sleep over all reliable days from actigraphy	Average daily duration of WASO (wake after sleep onset) in main sleep over all reliable days from actigraphy	Sleep Monitoring/Actigraphy
	sawa293 Average daily duration of wake after sleep offset (snooze time) in main sleep over all reliable days from actigraphy	Average daily duration of wake after sleep offset (snooze time) in main sleep over all reliable days from actigraphy	Sleep Monitoring/Actigraphy
	sawa294 Average daily duration of wake in bed in main sleep over all reliable days from actigraphy	Average daily duration of wake in bed in main sleep over all reliable days from actigraphy	Sleep Monitoring/Actigraphy
	sawa295 Average daily sleep efficiency in main sleep over all reliable days from actigraphy	Average daily sleep efficiency in main sleep over all reliable days from actigraphy	Sleep Monitoring/Actigraphy
	sawa296 Standard deviation of daily sleep efficiency in main sleep over all reliable days from actigraphy	Standard deviation of daily sleep efficiency in main sleep over all reliable days from actigraphy	Sleep Monitoring/Actigraphy
	sawa297 Average daily sleep maintenance efficiency in main sleep over all reliable days from actigraphy	Average daily sleep maintenance efficiency in main sleep over all reliable days from actigraphy	Sleep Monitoring/Actigraphy
	sawa298 Standard deviation of daily sleep maintenance efficiency in main sleep over all reliable days from actigraphy	Standard deviation of daily sleep maintenance efficiency in main sleep over all reliable days from actigraphy	Sleep Monitoring/Actigraphy
	sawa299 Average index of fragmentation in main sleep over all reliable days from actigraphy	Average index of fragmentation in main sleep over all reliable days from actigraphy Sleep Fragmentation is an index of restlessness during the sleep period expressed as a percentage. Kristen L et al. 2011 (PubMed ID:21411507) There are three type of measures for sleep fragmentation: movement Index (MI), fragmentation index (FI), and total sleep fragmentation Index. The fragmentation index refers to the percentage of 60s periods of sleep out of the total number of periods of immobility. The movement index refers to the total of scored awake minutes divided by sleep period (i.e. total time in bed). The total sleep fragmentation index is the sum of FI and MI. (ActiGraph validation reference)[https://actigraphcorp.force.com/support/s/article/Sleep-Fragmentation-Index-Validation-Reference]	Sleep Monitoring/Actigraphy
	sawa30 Standard deviation of the daily sleep maintenance efficiency in main sleep over all days from actigraphy	Standard deviation of the daily sleep maintenance efficiency in main sleep over all days from actigraphy This variable is similar to variable sawa63; however, sawa30 is generated automatically by Actiware before data optimization.	Sleep Monitoring/Actigraphy
	sawa300 Average number of sleep bouts (continuous periods of sleep) between sleep onset and sleep offset in main sleep over all reliable days from actigraphy	Average number of sleep bouts (continuous periods of sleep) between sleep onset and sleep offset in main sleep over all reliable days from actigraphy sleep bouts are continuous blocks, one or more epochs in duration, with each epoch of each block scored as "sleep", between the start time and the end time of the given interval.	Sleep Monitoring/Actigraphy
	sawa301 Average number of wake bouts (continuous periods of wake) between sleep onset and sleep offset in main sleep over all reliable days from actigraphy	Average number of wake bouts (continuous periods of wake) between sleep onset and sleep offset in main sleep over all reliable days from actigraphy Wake bouts is also referred to as "nocturnal awakenings". There are always comparable number of wake bouts to sleep bouts.	Sleep Monitoring/Actigraphy
	sawa302 Total number of reliable days with naps in the entire actigraphy recording period across all days from actigraphy	Total number of reliable days with naps in the entire actigraphy recording period across all days from actigraphy This is the number of reliable days that have at least one nap. This refers to the number of reliable days on which a participant reported taking naps.	Sleep Monitoring/Actigraphy
	sawa303 Total number of reliable days with naps of any sleep recorded in the entire actigraphy recording period across all days from actigraphy	Total number of reliable days with naps of any sleep recorded in the entire actigraphy recording period across all days from actigraphy	Sleep Monitoring/Actigraphy
	sawa304 Total number of reliable days with naps of at least 15 minutes in length in the entire actigraphy recording period across all days from actigraphy	Total number of reliable days with naps of at least 15 minutes in length in the entire actigraphy recording period across all days from actigraphy	Sleep Monitoring/Actigraphy
	sawa305 Average daily number of naps in 24 hours (including main rest intervals and naps) over all reliable days from actigraphy	Average daily number of naps in 24 hours (including main rest intervals and naps) over all reliable days from actigraphy	Sleep Monitoring/Actigraphy
	sawa306 Average daily number of naps of any sleep recorded over all reliable days from actigraphy	Average daily number of naps of any sleep recorded over all reliable days from actigraphy	Sleep Monitoring/Actigraphy
	sawa307 Average daily number of naps of at least 15 minutes in length over all reliable days from actigraphy	Average daily number of naps of at least 15 minutes in length over all reliable days from actigraphy	Sleep Monitoring/Actigraphy
	sawa308 Average sleep duration per nap over all reliable days from actigraphy	Average sleep duration per nap over all reliable days from actigraphy	Sleep Monitoring/Actigraphy
	sawa309 Avearage sleep duration per nap of any sleep recorded over all reliable days from actigraphy	Avearage sleep duration per nap of any sleep recorded over all reliable days from actigraphy	Sleep Monitoring/Actigraphy
	sawa31 Average daily sleep period in main sleep on weekends from actigraphy	Average daily sleep period in main sleep on weekends from actigraphy Sleep period is the interval between sleep onset and sleep offset time. This variable is similar to sawa146; however, sawa31 is derived from Actiware variable sawa18 before data optimization.	Sleep Monitoring/Actigraphy
	sawa310 Average sleep duration per nap of at least 15 minutes in length over all reliable days from actigraphy	Average sleep duration per nap of at least 15 minutes in length over all reliable days from actigraphy	Sleep Monitoring/Actigraphy
	sawa311 Average daily sleep duration in naps over all reliable days from actigraphy	Average daily sleep duration in naps over all reliable days from actigraphy	Sleep Monitoring/Actigraphy
	sawa312 Average daily sleep duration in naps of at least 15 minutes in length over all reliable days from actigraphy	Average daily sleep duration in naps of at least 15 minutes in length over all reliable days from actigraphy	Sleep Monitoring/Actigraphy
	sawa313 Average daily start time of in-bed or rest interval in main sleep over all reliable days from actigraphy	Average daily start time of in-bed or rest interval in main sleep over all reliable days from actigraphy	Sleep Monitoring/Actigraphy
	sawa314 Standard deviation of the daily start time of in-bed or rest interval in main sleep over all reliable days from actigraphy	Standard deviation of the daily start time of in-bed or rest interval in main sleep over all reliable days from actigraphy	Sleep Monitoring/Actigraphy
	sawa315 Average daily sleep onset time in main sleep over all reliable days from actigraphy	Average daily sleep onset time in main sleep over all reliable days from actigraphy	Sleep Monitoring/Actigraphy
	sawa316 Standard deviation of the daily sleep onset time in main sleep over all reliable days from actigraphy	Standard deviation of the daily sleep onset time in main sleep over all reliable days from actigraphy	Sleep Monitoring/Actigraphy
	sawa317 Average daily sleep offset time in main sleep over all reliable days from actigraphy	Average daily sleep offset time in main sleep over all reliable days from actigraphy	Sleep Monitoring/Actigraphy
	sawa318 Standard deviation of the daily sleep offset time in main sleep over all reliable days from actigraphy	Standard deviation of the daily sleep offset time in main sleep over all reliable days from actigraphy	Sleep Monitoring/Actigraphy
	sawa319 Average daily end time of rest period in main sleep over all reliable days from actigraphy	Average daily end time of rest period in main sleep over all reliable days from actigraphy Rest period is the interval between the start and end of the rest interval, used in actigraphy.	Sleep Monitoring/Actigraphy
	sawa32 Average daily sleep period on weekdays from actigraphy	Average daily sleep period on weekdays from actigraphy This variable is similar to sawa99; however, sawa32 is derived from Actiware variable sawa18 before data optimization.	Sleep Monitoring/Actigraphy
	sawa320 Standard deviation of the daily end time of rest period in main sleep over all reliable days from actigraphy	Standard deviation of the daily end time of rest period in main sleep over all reliable days from actigraphy Rest period is the interval between the start and end of the rest interval, used in actigraphy.	Sleep Monitoring/Actigraphy
	sawa321 Average daily mid-point of rest period in main sleep over all reliable days from actigraphy	Average daily mid-point of rest period in main sleep over all reliable days from actigraphy Rest period is the interval between the start and end of the rest interval, used in actigraphy.	Sleep Monitoring/Actigraphy
	sawa322 Standard deviation of the daily mid-point time of rest period in main sleep over all reliable days from actigraphy	Standard deviation of the daily mid-point time of rest period in main sleep over all reliable days from actigraphy Rest period is the interval between the start and end of the rest interval, used in actigraphy.	Sleep Monitoring/Actigraphy
	sawa323 Average daily mid-point of sleep period in main sleep over all reliable days from actigraphy	Average daily mid-point of sleep period in main sleep over all reliable days from actigraphy Sleep period is the interval between sleep onset and sleep offset time.	Sleep Monitoring/Actigraphy
	sawa324 Standard deviation of the daily mid-point of sleep period in main sleep over all reliable days from actigraphy	Standard deviation of the daily mid-point of sleep period in main sleep over all reliable days from actigraphy Sleep period is the interval between sleep onset and sleep offset time.	Sleep Monitoring/Actigraphy
	sawa325 Average time above lux threshold for white light in 24 hours (including main rest intervals and naps) over all reliable days from actigraphy	Average time above lux threshold for white light in 24 hours (including main rest intervals and naps) over all reliable days from actigraphy	Sleep Monitoring/Actigraphy
	sawa326 Average time above lux threshold for blue light in 24 hours (including main rest intervals and naps) over all reliable days from actigraphy	Average time above lux threshold for blue light in 24 hours (including main rest intervals and naps) over all reliable days from actigraphy	Sleep Monitoring/Actigraphy
	sawa327 Average time above lux threshold for green light in 24 hours (including main rest intervals and naps) over all reliable days from actigraphy	Average time above lux threshold for green light in 24 hours (including main rest intervals and naps) over all reliable days from actigraphy	Sleep Monitoring/Actigraphy
	sawa328 Average time above lux threshold for red light in 24 hours (including main rest intervals and naps) over all reliable days from actigraphy	Average time above lux threshold for red light in 24 hours (including main rest intervals and naps) over all reliable days from actigraphy	Sleep Monitoring/Actigraphy
	sawa329 Number of days logged in sleep diary	Number of days logged in sleep diary	Sleep Monitoring/Actigraphy
	sawa33 Average daily sleep maintenance efficiency in main sleep on weekends from actigraphy	Average daily sleep maintenance efficiency in main sleep on weekends from actigraphy This variable is similar to variable sawa156; however, sawa33 is derived from Actiware variable sawa24 before data optimization.	Sleep Monitoring/Actigraphy
	sawa330 Average daily start time of rest period in main sleep over all days from sleep diary	Average daily start time of rest period in main sleep over all days from sleep diary This is the average time at which the participant self-reported going to bed across all days in the daily sleep log.	Sleep Monitoring/Actigraphy
	sawa331 Average daily end time of rest period in main sleep over all days from sleep diary	Average daily end time of rest period in main sleep over all days from sleep diary This is the average time at which the participant self-reported going to bed across all days in the daily sleep log.	Sleep Monitoring/Actigraphy
	sawa332 Total number of workdays with sleep data recorded from sleep diary	Total number of workdays with sleep data recorded from sleep diary This is the number of daily sleep log entries on which the participant reported going to work or school.	Sleep Monitoring/Actigraphy
	sawa333 Percent of days with naps from sleep diary	Percent of days with naps from sleep diary	Sleep Monitoring/Actigraphy
	sawa334 Average activity counts per minute in active interval over all days from actigraphy	Average activity counts per minute in active interval over all days from actigraphy	Sleep Monitoring/Actigraphy
	sawa335 Average activity counts per minute in main sleep over all days from actigraphy	Average activity counts per minute in main sleep over all days from actigraphy	Sleep Monitoring/Actigraphy
	sawa336 Average activity per minute in naps over all days from actigraphy	Average activity per minute in naps over all days from actigraphy This is the average activity count per minute, across all time spent in a nap interval.	Sleep Monitoring/Actigraphy
	sawa337 Average activity counts per minute in 24 hours (including main rest intervals and naps) over all days from actigraphy	Average activity counts per minute in 24 hours (including main rest intervals and naps) over all days from actigraphy	Sleep Monitoring/Actigraphy
	sawa338 Interdaily stability of rest-activity rhythm in 24 hours (including main rest intervals and naps) over all days from actigraphy	Interdaily stability of rest-activity rhythm in 24 hours (including main rest intervals and naps) over all days from actigraphy	Sleep Monitoring/Actigraphy
	sawa339 Interdaily variability of rest-activity rhythm in 24 hours (including main rest intervals and naps) over all days from actigraphy	Interdaily variability of rest-activity rhythm in 24 hours (including main rest intervals and naps) over all days from actigraphy	Sleep Monitoring/Actigraphy
	sawa34 Average daily sleep maintenance efficiency in main sleep on weekdays from actigraphy	Average daily sleep maintenance efficiency in main sleep on weekdays from actigraphy This variable is similar to variable sawa109; however, sawa34 is derived from Actiware variable sawa24 before data optimization.	Sleep Monitoring/Actigraphy
	sawa343 Total number of days with valid actigraphy data on workdays from actigraphy	Total number of days with valid actigraphy data on workdays from actigraphy The number of days with valid actigraphy data on which the participant self-reported as having attended work or school in the daily sleep log.	Sleep Monitoring/Actigraphy
	sawa344 Total number of days with valid actigraphy data on non-workdays from actigraphy	Total number of days with valid actigraphy data on non-workdays from actigraphy The number of days with valid actigraphy data on which the participant self-reported as not having attended work or school.	Sleep Monitoring/Actigraphy
	sawa35 Average daily total sleep duration in main sleep on weekends from actigraphy	Average daily total sleep duration in main sleep on weekends from actigraphy This variable is similar to the calculated variable sawa148; however, sawa35 is calculated based on data generated by Actiware software before data cleaning and imputation.	Sleep Monitoring/Actigraphy
	sawa36 Average daily total sleep duration in main sleep on weekdays from actigraphy	Average daily total sleep duration in main sleep on weekdays from actigraphy This variable is similar to the calculated variable sawa101; however, sawa36 is calculated based on data generated by Actiware software before data cleaning and imputation.	Sleep Monitoring/Actigraphy
	sawa37 Average daily start time of in-bed or rest interval in main sleep over all days from actigraphy	Average daily start time of in-bed or rest interval in main sleep over all days from actigraphy This variable is similar to sawa78; however sawa37 is calculated based on data generated by Actiware software before data optimization.	Sleep Monitoring/Actigraphy
	sawa38 Standard deviation of the daily start time of in-bed or rest interval in main sleep over all days from actigraphy	Standard deviation of the daily start time of in-bed or rest interval in main sleep over all days from actigraphy This variable is similar to sawa79; however, sawa38 is calculated based on data generated by Actiware software before data optimization.	Sleep Monitoring/Actigraphy
	sawa39 Average daily start time of in-bed or rest interval in main sleep on weekdays from actigraphy	Average daily start time of in-bed or rest interval in main sleep on weekdays from actigraphy This variable is similar to sawa125; however sawa39 is calculated based on data generated by Actiware software before data optimization.	Sleep Monitoring/Actigraphy
	sawa40 Average daily start time of in-bed or rest interval in main sleep on weekends from actigraphy	Average daily start time of in-bed or rest interval in main sleep on weekends from actigraphy This variable is similar to the generated variable sawa172; however sawa40 is calculated based on data generated by Actiware software before data optimization.	Sleep Monitoring/Actigraphy
	sawa41 Average daily sleep onset time across all days from actigraphy	Average daily sleep onset time across all days from actigraphy This variable is similar to variable SAWA80; however, SAWA41 is calculated based on data generated by Actiware software before data optimization	Sleep Monitoring/Actigraphy
	sawa42 Standard deviation of the daily sleep onset time across all days from actigraphy	Standard deviation of the daily sleep onset time across all days from actigraphy This variable is similar to variable sawa81; however sawa42 is calculated based on data generated by Actiware software before data optimization.	Sleep Monitoring/Actigraphy
	sawa43 Average daily sleep onset time on weekdays from actigraphy	Average daily sleep onset time on weekdays from actigraphy This variable is similar to variable SAWA127; however, SAWA43 is calculated based on data generated by Actiware software before data optimization	Sleep Monitoring/Actigraphy
	sawa44 Average daily sleep onset time on weekends from actigraphy	Average daily sleep onset time on weekends from actigraphy This variable is similar to variable SAWA174; however, SAWA44 is calculated based on data generated by Actiware software before data optimization	Sleep Monitoring/Actigraphy
	sawa45 Average daily total sleep duration in main sleep across all days from actigraphy	Average daily total sleep duration in main sleep across all days from actigraphy Sleep duration (i.e. total sleep time) is the interval between sleep onset and sleep offset time while asleep. This variable is similar to the calculated variable sawa54; however, sawa45 is calculated based on data generated by Actiware software before data cleaning and imputation.	Sleep Monitoring/Actigraphy
	sawa46 Average daily duration of wake in bed across all days from actigraphy	Average daily duration of wake in bed across all days from actigraphy This variable is similar to sawa59; however, sawa46 is generated by Actiware software before data optimization.	Sleep Monitoring/Actigraphy
	sawa47 Total number of days with sleep data recorded over all days from actigraphy	Total number of days with sleep data recorded over all days from actigraphy This is the number of valid main rest intervals in the recording that meet quality criteria. Main rest intervals are the intervals of time between the epoch at which the participant went to bed and the epoch at which the participant got out of bed, as marked by the scorer. It refers to the participant's nightly time in bed, including time awake and asleep.	Sleep Monitoring/Actigraphy
	sawa48 Average daily total sleep duration in main sleep and naps combined across all days from actigraphy	Average daily total sleep duration in main sleep and naps combined across all days from actigraphy Sleep duration (i.e. total sleep time) is the interval between sleep onset and sleep offset time while asleep.	Sleep Monitoring/Actigraphy
	sawa49 Standard deviation of sleep period in 24 hours (including main rest intervals and naps) over all days from actigraphy	Standard deviation of sleep period in 24 hours (including main rest intervals and naps) over all days from actigraphy Sleep period is the interval between sleep onset and sleep offset time.	Sleep Monitoring/Actigraphy
	sawa50 Average daily rest period in main sleep over all days from actigraphy	Average daily rest period in main sleep over all days from actigraphy This variable is similar to sawa16; however, sawa16 is generated by Actiware software before data optimization.	Sleep Monitoring/Actigraphy
	sawa51 Standard deviation of the daily rest period in main sleep over all days from actigraphy	Standard deviation of the daily rest period in main sleep over all days from actigraphy Rest period is the interval between the start and end of the rest interval, used in actigraphy. This is similar to sawa28; however, sawa28 is generated by Actiware software before data optimization.	Sleep Monitoring/Actigraphy
	sawa52 Average daily sleep period across all days from actigraphy	Average daily sleep period across all days from actigraphy 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.	Sleep Monitoring/Actigraphy
	sawa53 Standard deviation of daily sleep period across all days from actigraphy	Standard deviation of daily sleep period across all days from actigraphy Sleep period is the interval between sleep onset and sleep offset time. This variable is similar to sawa29; however, sawa29 is generated by Actiware software before data optimization.	Sleep Monitoring/Actigraphy
	sawa54 Average daily total sleep duration in main sleep across all days from actigraphy	Average daily total sleep duration in main sleep across all days from actigraphy Sleep duration (i.e. total sleep time) is the interval between sleep onset and sleep offset time while asleep. This variable is similar to variable sawa45; however, sawa45 is calculated based on data generated by Actiware software before data cleaning and imputation.	Sleep Monitoring/Actigraphy
	sawa55 Standard deviation of daily total sleep duration in main sleep across all days from actigraphy	Standard deviation of daily total sleep duration in main sleep across all days from actigraphy Sleep duration (i.e. total sleep time) is the interval between sleep onset and sleep offset time while asleep.	Sleep Monitoring/Actigraphy
	sawa56 Average daily sleep onset latency across all days from actigraphy	Average daily sleep onset latency across all days from actigraphy This variable is similar to sawa19; however, sawa19 is generated by Actiware software before data optimization.	Sleep Monitoring/Actigraphy
	sawa57 Average daily duration of wake after sleep onset (WASO) across all days from actigraphy	Average daily duration of wake after sleep onset (WASO) across all days from actigraphy This variable is similar to sawa22; however, sawa22 is generated by Actiware software before data optimization.	Sleep Monitoring/Actigraphy
	sawa58 Average daily duration of wake after sleep offset (snooze time) across all days from actigraphy	Average daily duration of wake after sleep offset (snooze time) across all days from actigraphy This variable is similar to sawa20; however, sawa20 is generated by Actiware software before data optimization.	Sleep Monitoring/Actigraphy
	sawa59 Average daily duration of wake in bed across all days from actigraphy	Average daily duration of wake in bed across all days from actigraphy This variable is similar to sawa46; however, sawa46 is generated by Actiware software before data optimization.	Sleep Monitoring/Actigraphy
	sawa60 Average daily sleep efficiency across all days from actigraphy	Average daily sleep efficiency across all days from actigraphy This variable is similar to sawa21; however, sawa21 is generated automatically by Actiware before data optimization.	Sleep Monitoring/Actigraphy
	sawa61 Standard deviation of the daily sleep maintenance efficiency across all days from actigraphy	Standard deviation of the daily sleep maintenance efficiency across all days from actigraphy	Sleep Monitoring/Actigraphy
	sawa62 Average daily sleep maintenance efficiency in main sleep over all days from actigraphy	Average daily sleep maintenance efficiency in main sleep over all days from actigraphy This variable is similar to the calculated variable sawa24; however, sawa24 is generated automatically by Actiware before data optimization.	Sleep Monitoring/Actigraphy
	sawa63 Standard deviation of daily sleep maintenance efficiency in main sleep over all days from actigraphy	Standard deviation of daily sleep maintenance efficiency in main sleep over all days from actigraphy This variable is similar to variable sawa30; however, sawa30 is generated automatically by Actiware before data optimization.	Sleep Monitoring/Actigraphy
	sawa64 Average daily total sleep fragmentation index in main sleep across all days from actigraphy	Average daily total sleep fragmentation index in main sleep across all days from actigraphy Sleep Fragmentation is an index of restlessness during the sleep period expressed as a percentage. Kristen L et al. 2011 (PubMed ID:21411507) There are three type of measures for sleep fragmentation: movement Index (MI), fragmentation index (FI), and total sleep fragmentation Index. The fragmentation index refers to the percentage of 60s periods of sleep out of the total number of periods of immobility. The movement index refers to the total of scored awake minutes divided by sleep period (i.e. total time in bed). The total sleep fragmentation index is the sum of FI and MI. (ActiGraph validation reference)[https://actigraphcorp.force.com/support/s/article/Sleep-Fragmentation-Index-Validation-Reference] This variable is similar to variable sawa26; however, sawa26 is generated by Actiware software before data optimization.	Sleep Monitoring/Actigraphy
	sawa65 Average number of sleep bouts (continuous periods of sleep) between sleep onset and sleep offset in main sleep over all days from actigraphy	Average number of sleep bouts (continuous periods of sleep) between sleep onset and sleep offset in main sleep over all days from actigraphy sleep bouts are continuous blocks, one or more epochs in duration, with each epoch of each block scored as "sleep", between the start time and the end time of the given interval. This variable is similar to variable sawa25; however, sawa25 is generated by Actiware software before data optimization.	Sleep Monitoring/Actigraphy
	sawa66 Average number of wake bouts (continuous periods of wake) between sleep onset and sleep offset in main sleep over all days from actigraphy	Average number of wake bouts (continuous periods of wake) between sleep onset and sleep offset in main sleep over all days from actigraphy Wake bouts is also referred to as "nocturnal awakenings". There are always comparable number of wake bouts to sleep bouts. This variable is similar to variable sawa23; however, sawa23 is generated by Actiware software before data optimization.	Sleep Monitoring/Actigraphy
	sawa67 Total number of days with naps in 24 hours (including main rest intervals and naps) over all days from actigraphy	Total number of days with naps in 24 hours (including main rest intervals and naps) over all days from actigraphy	Sleep Monitoring/Actigraphy
	sawa68 Total number of days with naps of any sleep recorded in 24 hours (including main rest intervals and naps) over all days from actigraphy	Total number of days with naps of any sleep recorded in 24 hours (including main rest intervals and naps) over all days from actigraphy	Sleep Monitoring/Actigraphy
	sawa69 Total number of days with naps of at least 15 minutes in length in 24 hours (including main rest intervals and naps) over all days from actigraphy	Total number of days with naps of at least 15 minutes in length in 24 hours (including main rest intervals and naps) over all days from actigraphy	Sleep Monitoring/Actigraphy
	sawa70 Average number of naps per day over all days from actigraphy	Average number of naps per day over all days from actigraphy	Sleep Monitoring/Actigraphy
	sawa71 Average number of naps of any sleep recorded over all days from actigraphy	Average number of naps of any sleep recorded over all days from actigraphy	Sleep Monitoring/Actigraphy