Table 1.
Distributions of sleep-related variables in NHANES.
| Year cycle 2005-2008 | Year cycle 2009-2010 | Year cycle 2011-2014 | Year cycle 2011-2016 | Year cycle 2017-2018 | |
|---|---|---|---|---|---|
| Sleep Duration | How much sleep do you get (hours)? | How much sleep do you get (hours)? | How much sleep do you get (hours)? | Sleep hours | |
| How often did you not get enough sleep? | |||||
| Sleep hours - weekdays or workdays | |||||
| Sleep hours - weekends | |||||
| Sleep Disturbances | Ever told doctor had trouble sleeping? | Ever told doctor had trouble sleeping? | Ever told doctor had trouble sleeping? | Ever told doctor had trouble sleeping? | Ever told doctor had trouble sleeping? |
| Ever told by doctor have sleep disorder? | Ever told by doctor have sleep disorder? | Ever told by doctor have sleep disorder? | |||
| How often wake up during night? | |||||
| How often do you snore? | How often do you snore? | How often do you snore? | |||
| How often do you snort / stop breathing? | How often do you snort / stop breathing? | How often do you snort / stop breathing? | |||
| Sleep disorder: sleep apnea | |||||
| Sleep disorder: insomnia | |||||
| Sleep disorder: restless legs | |||||
| Sleep disorder: other | |||||
| Influence of Sleep Disturbances | How often feel unrested during the day? | ||||
| How often feel overly sleepy during day? | How often feel overly sleepy during day? | How often feel overly sleepy during day? | |||
| How often have leg jerks while sleeping? | |||||
| How often have legs cramp while sleeping | |||||
| Difficulty concentrating when tired? | |||||
| Difficulty remembering when tired? | |||||
| Difficulty eating when tired? | |||||
| Difficulty with a hobby when tired? | |||||
| Difficulty getting things done? | |||||
| Difficulty with finance when tired? | |||||
| Difficulty at work because tired? | |||||
| Difficulty on phone when tired? | |||||
| Usual sleep time on weekdays or workdays | Usual sleep time on weekdays or workdays | ||||
| Usual sleep time on weekends | |||||
| Usual wake time on weekdays or workdays | Usual wake time on weekdays or workdays | ||||
| Usual wake time on weekends | |||||
| Accelerometers (PAM) | Day of the week measurement started | ||||
| The last day when the measurements taken | |||||
| First data timestamp in GT3X | |||||
| Timestamp at end of last day | |||||
| Total seconds/minutes with data in the minute file or in the hour/day files | |||||
| Total number of 80 Hz acceleration measurements logged during idle sleep mode | |||||
| Total number of valid minutes in the hour/day | |||||
| Predicted wake/sleep/non-wear status during the minute | |||||
| Transition flag for wake/sleep/non-wear | |||||
| Valid wake/sleep/non-wear/unknown minutes in the hour | |||||
| Valid wake/sleep/non-wear/unknown minutes in the day |