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Hispanic Community Health Study / Study of Latinos

Name Label Folder
sawa194
Standard deviation of daily sleep period on workdays from actigraphy
Standard deviation of daily sleep period on workdays from actigraphy

Sleep period is the interval between sleep onset and sleep offset time.

Sleep Monitoring/Actigraphy
sawa195
Average daily total sleep duration in main sleep on workdays from actigraphy
Average daily total sleep duration in main sleep on workdays from actigraphy

Sleep duration is the interval between sleep onset and sleep offset time while asleep.

Sleep Monitoring/Actigraphy
sawa196
Standard deviation of daily total sleep duration in main sleep on workdays from actigraphy
Standard deviation of daily total sleep duration in main sleep on workdays from actigraphy

Sleep duration is the interval between sleep onset and sleep offset time while asleep.

Sleep Monitoring/Actigraphy
sawa197
Average daily sleep onset latency on workdays from actigraphy
Average daily sleep onset latency on workdays from actigraphy Sleep Monitoring/Actigraphy
sawa198
Average daily duration of wake after sleep onset (WASO) on workdays from actigraphy
Average daily duration of wake after sleep onset (WASO) on workdays from actigraphy Sleep Monitoring/Actigraphy
sawa199
Average daily duration of wake after sleep offset (snooze time) on workdays from actigraphy
Average daily duration of wake after sleep offset (snooze time) on workdays from actigraphy Sleep Monitoring/Actigraphy
sawa20
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 sawa58; however, sawa20 is generated by Actiware software before data optimization.

Sleep Monitoring/Actigraphy
sawa200
Average daily duration of wake in bed on workdays from actigraphy
Average daily duration of wake in bed on workdays from actigraphy Sleep Monitoring/Actigraphy
sawa201
Average daily sleep efficiency in main sleep on workdays from actigraphy
Average daily sleep efficiency in main sleep on workdays from actigraphy Sleep Monitoring/Actigraphy
sawa202
Standard deviation of the daily sleep efficiency on workdays from actigraphy
Standard deviation of the daily sleep efficiency on workdays from actigraphy Sleep Monitoring/Actigraphy
sawa203
Average daily sleep maintenance efficiency sleep in main sleep on workdays from actigraphy
Average daily sleep maintenance efficiency sleep in main sleep on workdays from actigraphy Sleep Monitoring/Actigraphy
sawa204
Standard deviation of daily sleep maintenance efficiency sleep in main sleep on workdays from actigraphy
Standard deviation of daily sleep maintenance efficiency sleep in main sleep on workdays from actigraphy Sleep Monitoring/Actigraphy
sawa205
Average daily total sleep fragmentation index in main sleep on workdays from actigraphy
Average daily total sleep fragmentation index in main sleep on workdays 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
sawa206
Average number of sleep bouts (continuous periods of sleep) between sleep onset and sleep offset in main sleep on workdays from actigraphy
Average number of sleep bouts (continuous periods of sleep) between sleep onset and sleep offset in main sleep on workdays 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
sawa207
Average number of wake bouts (continuous periods of wake) between sleep onset and sleep offset in main sleep on workdays from actigraphy
Average number of wake bouts (continuous periods of wake) between sleep onset and sleep offset in main sleep on workdays 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
sawa208
Total number of days with naps on workdays from actigraphy
Total number of days with naps on workdays from actigraphy Sleep Monitoring/Actigraphy
sawa209
Total number of days with naps of any sleep recorded on workdays from actigraphy
Total number of days with naps of any sleep recorded on workdays from actigraphy Sleep Monitoring/Actigraphy
sawa21
Average daily sleep efficiency across all days from actigraphy
Average daily sleep efficiency across all days from actigraphy

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

Sleep Monitoring/Actigraphy
sawa210
Total number of days with naps of at least 15 minutes in length on workdays from actigraphy
Total number of days with naps of at least 15 minutes in length on workdays from actigraphy Sleep Monitoring/Actigraphy
sawa211
Average daily number of naps in 24 hours (including main rest intervals and naps) on workdays from actigraphy
Average daily number of naps in 24 hours (including main rest intervals and naps) on workdays from actigraphy Sleep Monitoring/Actigraphy
sawa212
Average daily number of naps of any sleep recorded on workdays from actigraphy
Average daily number of naps of any sleep recorded on workdays from actigraphy Sleep Monitoring/Actigraphy
sawa213
Average daily number of naps of at least 15 minutes in length on workdays from actigraphy
Average daily number of naps of at least 15 minutes in length on workdays from actigraphy Sleep Monitoring/Actigraphy
sawa214
Average sleep duration per nap on workdays from actigraphy
Average sleep duration per nap on workdays from actigraphy

Sleep duration is the interval between sleep onset and sleep offset time while asleep.

Sleep Monitoring/Actigraphy
sawa215
Average sleep duration per nap of any sleep recorded on workdays from actigraphy
Average sleep duration per nap of any sleep recorded on workdays from actigraphy

Sleep duration is the interval between sleep onset and sleep offset time while asleep.

Sleep Monitoring/Actigraphy
sawa216
Average sleep duration per nap of at least 15 minutes in length on workdays from actigraphy
Average sleep duration per nap of at least 15 minutes in length on workdays from actigraphy

Sleep duration is the interval between sleep onset and sleep offset time while asleep.

Sleep Monitoring/Actigraphy
sawa217
Average daily sleep duration in naps on workdays from actigraphy
Average daily sleep duration in naps on workdays from actigraphy Sleep Monitoring/Actigraphy
sawa218
Average daily sleep duration in naps of at least 15 minutes in length on workdays from actigraphy
Average daily sleep duration in naps of at least 15 minutes in length on workdays from actigraphy Sleep Monitoring/Actigraphy
sawa219
Average daily start time of in-bed or rest interval in main sleep on workdays from actigraphy
Average daily start time of in-bed or rest interval in main sleep on workdays from actigraphy Sleep Monitoring/Actigraphy
sawa22
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 sawa57; however, sawa22 is generated by Actiware software before data optimization.

Sleep Monitoring/Actigraphy
sawa220
Standard deviation of daily start time of in-bed or rest interval in main sleep on workdays from actigraphy
Standard deviation of daily start time of in-bed or rest interval in main sleep on workdays from actigraphy Sleep Monitoring/Actigraphy
sawa221
Average daily sleep onset time on workdays from actigraphy
Average daily sleep onset time on workdays from actigraphy Sleep Monitoring/Actigraphy
sawa222
Standard deviation of the daily sleep onset time on workdays from actigraphy
Standard deviation of the daily sleep onset time on workdays from actigraphy Sleep Monitoring/Actigraphy
sawa223
Average daily sleep offset time on workdays from actigraphy
Average daily sleep offset time on workdays from actigraphy Sleep Monitoring/Actigraphy
sawa224
Standard deviation of daily sleep offset time on workdays from actigraphy
Standard deviation of daily sleep offset time on workdays from actigraphy Sleep Monitoring/Actigraphy
sawa225
Average daily end time of in-bed or rest interval in main sleep on workdays from actigraphy
Average daily end time of in-bed or rest interval in main sleep on workdays from actigraphy Sleep Monitoring/Actigraphy
sawa226
Standard deviation of the daily end time of in-bed or rest interval in main sleep on workdays from actigraphy
Standard deviation of the daily end time of in-bed or rest interval in main sleep on workdays from actigraphy Sleep Monitoring/Actigraphy
sawa227
Average daily mid-point of in-bed or rest interval in main sleep on workdays from actigraphy
Average daily mid-point of in-bed or rest interval in main sleep on workdays from actigraphy Sleep Monitoring/Actigraphy
sawa228
Standard deviation of the daily mid-point of in-bed or rest interval in main sleep on workdays from actigraphy
Standard deviation of the daily mid-point of in-bed or rest interval in main sleep on workdays from actigraphy Sleep Monitoring/Actigraphy
sawa229
Average daily mid-point for sleep period on workdays from actigraphy
Average daily mid-point for sleep period on workdays from actigraphy

Sleep period is the interval between sleep onset and sleep offset time

Sleep Monitoring/Actigraphy
sawa23
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.

Sleep Monitoring/Actigraphy
sawa230
Standard deviation of the daily mid-point for sleep period on workdays from actigraphy
Standard deviation of the daily mid-point for sleep period on workdays from actigraphy

Sleep period is the interval between sleep onset and sleep offset time

Sleep Monitoring/Actigraphy
sawa231
Average whte light time above 1,000 microwatts per square centimeter threshold over 24-hour periods on workdays from actigraphy
Average whte light time above 1,000 microwatts per square centimeter threshold over 24-hour periods on workdays from actigraphy Sleep Monitoring/Actigraphy
sawa232
Average blue light time above 1,000 microwatts per square centimeter threshold over 24-hour periods on workdays from actigraphy
Average blue light time above 1,000 microwatts per square centimeter threshold over 24-hour periods on workdays from actigraphy Sleep Monitoring/Actigraphy
sawa233
Average green light time above 1,000 microwatts per square centimeter threshold over 24-hour periods on workdays from actigraphy
Average green light time above 1,000 microwatts per square centimeter threshold over 24-hour periods on workdays from actigraphy Sleep Monitoring/Actigraphy
sawa234
Average red light time above 1,000 microwatts per square centimeter threshold over 24-hour periods on workdays from actigraphy
Average red light time above 1,000 microwatts per square centimeter threshold over 24-hour periods on workdays from actigraphy Sleep Monitoring/Actigraphy
sawa235
Total number of main rest intervals that directly precede the subject not going to work or school from actigraphy
Total number of main rest intervals that directly precede the subject not going to work or school from actigraphy Sleep Monitoring/Actigraphy
sawa236
Average daily total sleep duration in main sleep and naps combined on non-workdays from actigraphy
Average daily total sleep duration in main sleep and naps combined on non-workdays from actigraphy

Sleep duration is the interval between sleep onset and sleep offset time while asleep.

Sleep Monitoring/Actigraphy
sawa237
Standard deviation of daily total sleep duration in main sleep and naps combined on non-workdays from actigraphy
Standard deviation of daily total sleep duration in main sleep and naps combined on non-workdays from actigraphy

Sleep duration is the interval between sleep onset and sleep offset time while asleep.

Sleep Monitoring/Actigraphy
sawa238
Average daily duration of rest period in main sleep on non-workdays from actigraphy
Average daily duration of rest period in main sleep on non-workdays from actigraphy

Rest period is the interval between the start and end of the rest interval, used in actigraphy.

Sleep Monitoring/Actigraphy
sawa239
Standard deviation of the daily rest period in main sleep on non-workdays from actigraphy
Standard deviation of the daily rest period in main sleep on non-workdays from actigraphy

Rest period is the interval between the start and end of the rest interval, used in actigraphy.

Sleep Monitoring/Actigraphy
sawa24
Average sleep maintenance efficiency sleep in main sleep over all days from actigraphy
Average sleep maintenance efficiency sleep in main sleep over all days from actigraphy

This variable is similar to the calculated variable sawa62; however, sawa24 is generated automatically by Actiware before data optimization.

Sleep Monitoring/Actigraphy
sawa240
Average daily sleep period on non-workdays from actigraphy
Average daily sleep period on non-workdays from actigraphy

This is the average duration of time between sleep onset and sleep offset across all non-workday main rest intervals, in minutes.

Sleep Monitoring/Actigraphy
sawa241
Standard deviation of daily sleep period on non-workdays from actigraphy
Standard deviation of daily sleep period on non-workdays from actigraphy Sleep Monitoring/Actigraphy
sawa242
Average daily total sleep duration in main sleep on non-workdays from actigraphy
Average daily total sleep duration in main sleep on non-workdays from actigraphy

Sleep duration is the interval between sleep onset and sleep offset time while asleep.

Sleep Monitoring/Actigraphy
sawa243
Standard deviation of daily total sleep duration in main sleep on non-workdays from actigraphy
Standard deviation of daily total sleep duration in main sleep on non-workdays from actigraphy

Sleep duration is the interval between sleep onset and sleep offset time while asleep.

Sleep Monitoring/Actigraphy
sawa244
Average daily sleep onset latency on non-workdays from actigraphy
Average daily sleep onset latency on non-workdays from actigraphy Sleep Monitoring/Actigraphy
sawa245
Average daily duration of wake after sleep onset (WASO) on non-workdays from actigraphy
Average daily duration of wake after sleep onset (WASO) on non-workdays from actigraphy Sleep Monitoring/Actigraphy
sawa246
Average daily duration of wake after sleep offset (snooze time) on non-workdays from actigraphy
Average daily duration of wake after sleep offset (snooze time) on non-workdays from actigraphy Sleep Monitoring/Actigraphy
sawa247
Average daily duration of wake in bed on non-workdays from actigraphy
Average daily duration of wake in bed on non-workdays from actigraphy Sleep Monitoring/Actigraphy
sawa248
Average daily sleep efficiency on non-workdays from actigraphy
Average daily sleep efficiency on non-workdays from actigraphy Sleep Monitoring/Actigraphy
sawa249
Standard deviation of the daily sleep efficiency on non-workdays from actigraphy
Standard deviation of the daily sleep efficiency on non-workdays from actigraphy Sleep Monitoring/Actigraphy
sawa25
Average daily number of sleep bouts (continuous periods of sleep) between sleep onset and sleep offset in main sleep over all days from actigraphy
Average daily 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 sawa65; however, sawa25 is generated by Actiware software before data optimization.

Sleep Monitoring/Actigraphy
sawa250
Average daily sleep maintenance efficiency sleep in main sleep on non-workdays from actigraphy
Average daily sleep maintenance efficiency sleep in main sleep on non-workdays from actigraphy Sleep Monitoring/Actigraphy
sawa251
Standard deviation of the daily sleep maintenance efficiency sleep in main sleep on non-workdays from actigraphy
Standard deviation of the daily sleep maintenance efficiency sleep in main sleep on non-workdays from actigraphy Sleep Monitoring/Actigraphy
sawa252
Average daily total sleep fragmentation index in main sleep on non-workdays from actigraphy
Average daily total sleep fragmentation index in main sleep on non-workdays 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
sawa253
Average daily number of sleep bouts (continuous periods of sleep) between sleep onset and sleep offset in main sleep on non-workdays from actigraphy
Average daily number of sleep bouts (continuous periods of sleep) between sleep onset and sleep offset in main sleep on non-workdays 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
sawa254
Average number of wake bouts (continuous periods of wake) between sleep onset and sleep offset in main sleep on non-workdays from actigraphy
Average number of wake bouts (continuous periods of wake) between sleep onset and sleep offset in main sleep on non-workdays 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
sawa255
Total number of days with naps on non-workdays from actigraphy
Total number of days with naps on non-workdays from actigraphy Sleep Monitoring/Actigraphy
sawa256
Total number of days with naps of any sleep recorded on non-workdays from actigraphy
Total number of days with naps of any sleep recorded on non-workdays from actigraphy Sleep Monitoring/Actigraphy
sawa257
Total number of days with naps of at least 15 minutes in length on non-workdays from actigraphy
Total number of days with naps of at least 15 minutes in length on non-workdays from actigraphy Sleep Monitoring/Actigraphy
sawa258
Average daily number of naps in 24 hours on non-workdays from actigraphy
Average daily number of naps in 24 hours on non-workdays from actigraphy Sleep Monitoring/Actigraphy
sawa259
Average daily number of naps of any sleep recorded on non-workdays from actigraphy
Average daily number of naps of any sleep recorded on non-workdays from actigraphy Sleep Monitoring/Actigraphy
sawa26
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 sawa64; however, sawa26 is generated by Actiware software before data optimization.

Sleep Monitoring/Actigraphy
sawa260
Average daily number of naps of at least 15 minutes in length on non-workdays from actigraphy
Average daily number of naps of at least 15 minutes in length on non-workdays from actigraphy Sleep Monitoring/Actigraphy
sawa261
Average sleep duration per nap on non-workdays from actigraphy
Average sleep duration per nap on non-workdays from actigraphy Sleep Monitoring/Actigraphy
sawa262
Average sleep duration per nap of any sleep recorded on non-workdays from actigraphy
Average sleep duration per nap of any sleep recorded on non-workdays from actigraphy Sleep Monitoring/Actigraphy
sawa263
Average sleep duration per nap of at least 15 minutes in length on non-workdays from actigraphy
Average sleep duration per nap of at least 15 minutes in length on non-workdays from actigraphy Sleep Monitoring/Actigraphy
sawa264
Average daily sleep duration in naps on non-workdays from actigraphy
Average daily sleep duration in naps on non-workdays from actigraphy Sleep Monitoring/Actigraphy
sawa265
Average daily sleep duration in naps of at least 15 minutes in length on non-workdays from actigraphy
Average daily sleep duration in naps of at least 15 minutes in length on non-workdays from actigraphy Sleep Monitoring/Actigraphy
sawa266
Average daily start time of in-bed or rest interval in main sleep on non-workdays from actigraphy
Average daily start time of in-bed or rest interval in main sleep on non-workdays from actigraphy Sleep Monitoring/Actigraphy
sawa267
Standard deviation of daily start time of in-bed or rest interval in main sleep on non-workdays from actigraphy
Standard deviation of daily start time of in-bed or rest interval in main sleep on non-workdays from actigraphy Sleep Monitoring/Actigraphy
sawa268
Average daily sleep onset time on non-workdays from actigraphy
Average daily sleep onset time on non-workdays from actigraphy Sleep Monitoring/Actigraphy
sawa269
Standard deviation of the daily sleep onset time on non-workdays from actigraphy
Standard deviation of the daily sleep onset time on non-workdays from actigraphy Sleep Monitoring/Actigraphy
sawa27
Average daily exposure to white light in 24 hours (including main rest intervals and naps) over all days from actigraphy
Average daily exposure to white light in 24 hours (including main rest intervals and naps) over all days from actigraphy

This is the average white light intensity, in lux over the entire day, as generated by Actiware before data optimization.

Sleep Monitoring/Actigraphy
sawa270
Average daily sleep offset time on non-workdays from actigraphy
Average daily sleep offset time on non-workdays from actigraphy Sleep Monitoring/Actigraphy
sawa271
Standard deviation of daily sleep offset time on non-workdays from actigraphy
Standard deviation of daily sleep offset time on non-workdays from actigraphy Sleep Monitoring/Actigraphy
sawa272
Average daily end time of in-bed or rest interval in main sleep on non-workdays from actigraphy
Average daily end time of in-bed or rest interval in main sleep on non-workdays from actigraphy Sleep Monitoring/Actigraphy
sawa273
Standard deviation of the daily end time of in-bed or rest interval in main sleep on non-workdays from actigraphy
Standard deviation of the daily end time of in-bed or rest interval in main sleep on non-workdays from actigraphy Sleep Monitoring/Actigraphy
sawa274
Average daily mid-point time of in-bed or rest interval in main sleep on non-workdays from actigraphy
Average daily mid-point time of in-bed or rest interval in main sleep on non-workdays from actigraphy Sleep Monitoring/Actigraphy
sawa275
Standard deviation of the daily mid-point time of in-bed or rest interval in main sleep on non-workdays from actigraphy
Standard deviation of the daily mid-point time of in-bed or rest interval in main sleep on non-workdays from actigraphy Sleep Monitoring/Actigraphy
sawa276
Average daily mid-point for sleep period on non-workdays from actigraphy
Average daily mid-point for sleep period on non-workdays from actigraphy

Sleep period is the interval between sleep onset and sleep offset time.

Sleep Monitoring/Actigraphy
sawa277
Standard deviation of the daily mid-point for sleep period on non-workdays from actigraphy
Standard deviation of the daily mid-point for sleep period on non-workdays from actigraphy

Sleep period is the interval between sleep onset and sleep offset time.

Sleep Monitoring/Actigraphy
sawa278
Average whte light time above 1,000 microwatts per square centimeter threshold over 24-hour periods on non-workdays from actigraphy
Average whte light time above 1,000 microwatts per square centimeter threshold over 24-hour periods on non-workdays from actigraphy Sleep Monitoring/Actigraphy
sawa279
Average blue light time above 1,000 microwatts per square centimeter threshold over 24-hour periods on non-workdays from actigraphy
Average blue light time above 1,000 microwatts per square centimeter threshold over 24-hour periods on non-workdays from actigraphy Sleep Monitoring/Actigraphy
sawa28
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 sawa51; however, sawa28 is generated by Actiware software before data optimization.

Sleep Monitoring/Actigraphy
sawa280
Average green light time above 1,000 microwatts per square centimeter threshold over 24-hour periods non-workdays from actigraphy
Average green light time above 1,000 microwatts per square centimeter threshold over 24-hour periods non-workdays from actigraphy Sleep Monitoring/Actigraphy
sawa281
Average red light time above 1,000 microwatts per square centimeter threshold over 24-hour periods on non-workdays from actigraphy
Average red light time above 1,000 microwatts per square centimeter threshold over 24-hour periods on non-workdays from actigraphy Sleep Monitoring/Actigraphy
sawa282
Total number of reliable days with sleep data recorded from actigraphy
Total number of reliable days with sleep data recorded from actigraphy

This is the number of main rest intervals for which the sum of the quality score for in bed and out of bed times is 5 or 6. Bed times are given a reliability score between 1 and 3: -8 = Not Applicable, -1 = Flag/ Confusion, 0 = No Evidence of Sleep, 1 = Unreliable, 2 = Somewhat reliable, 3 = Mostly reliable

Sleep Monitoring/Actigraphy
sawa283
Average daily sleep duration in 24 hours (including main rest intervals and naps) over all reliable days from actigraphy
Average daily sleep duration in 24 hours (including main rest intervals and naps) 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
sawa284
Standard deviation of the daily total sleep duration in 24 hours (including main rest intervals and naps) over all reliable days from actigraphy
Standard deviation of the daily total sleep duration in 24 hours (including main rest intervals and naps) 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