Definitions of the objective parameters inferred by actigraphy
| Author | Actigraphy | Sleep diary | |||||
| Parameter | Definition in the manuscript | Reference | Marker button | Sensor | Reported | Reference | |
| 2004 Richmond30 | Sleep efficiency, % | (sleep duration−wake time)/sleep duration)×100 | No | Unclear | Micro Mini-Motion Logger, Ambulatory Monitoring | No | No |
| No of waking | No | ||||||
| 2007 Richmond32 | Sleep efficiency, % | (sleep duration−wake time)/sleep duration)×100 | No | Unclear | Micro Mini-Motion Logger, Ambulatory Monitoring | No | No |
| No of waking | No | ||||||
| 2014 Abedelmalek 54 | Sleep efficiency, % | Percentage of sleep in the total time in bed | No | Unclear | Actiwatch sleep—Cambridge Neurotechnology | Unclear | No |
| Sleep latency | Time period measured from ‘lights out’ or bedtime to the beginning of sleep | ||||||
| Mean activity score, min | Average value of the activity counts per epoch over the assumed sleep period | ||||||
| 2014 Fowler 99 | Sleep efficiency, % | No | No | Not applicable | ReadiBand, Fatigue Science | No | No |
| Sleep–wake episodes, n | No | ||||||
| Sleep latency, min | No | ||||||
| Sleep mean wake duration, min | No | ||||||
| Variance from mean bed time, min | No | ||||||
| 2015 Shearer64 | Sleep efficiency, % | Ratio between total sleep time and time in bed | Leeder, Glaister, Pizzoferro, Dawson and Pedlar (2012) | Yes | Actiwatch 2; Philips Respironics | No | No |
| Sleep latency | Time to fall asleep from ‘time to bed’ | ||||||
| Time asleep | No | ||||||
| Time awake | No | ||||||
| Actual sleep, % | No | ||||||
| Moving time, % | No | ||||||
| 2015 Staunton66 | Sleep efficiency, % | Percentage time in bed that was spent sleeping | No | No | Actigraph GTX3 | No | No |
| 2016 Eagles 101 | Sleep efficiency, % | A percentage score calculated by incorporating movement and physiological measures over the sleep duration as determined by the BodyMedia SenseWear unit | No | No | SenseWear actigraphy; BodyMedia | No | No |
| 2016 Fullagar75 | Sleep onset latency, min | Time at which bed was entered to when the individual first fell asleep | No | No | ReadiBand, Fatigue Science | No | No |
| Sleep efficiency, % | Sleep time expressed as a % of time in bed | ||||||
| Wake episodes, n | No | ||||||
| Wake episode duration, min | No | ||||||
| 2016 Fullagar74 | Sleep onset latency | No | No | No | SenseWear actigraphy; BodyMedia | No | No |
| Sleep efficiency, % | No | ||||||
| Wake episodes, n | No | ||||||
| Wake episode duration, min | No | ||||||
| 2017 Fowler 81 | Sleep efficiency, % | Sleep duration expressed as a percentage of time in bed | No | Unclear | wActiSleep+, Actigraph | Unclear | No |
| 2017 O’Donnell90 | Total sleep time | Total time spent asleep | Driller, McQuillan, O'Donnell (2016) | No | ReadiBand, Fatigue Science | No | No |
| Sleep efficiency, % | Total time in bed divided by total sleep time | ||||||
| Sleep latency | Time taken for sleep onset | ||||||
| Wake episodes | Total no of awakenings per night | ||||||
| Sleep onset variance, min | Sleep onset consistency relative to mean | ||||||
| Wake variance, min | Wake time consistency relative to mean | ||||||
| Wake episode duration | Mean wake episode duration | ||||||
| Sleep onset time | Time of transition from wakefulness into sleep | ||||||
| 2017 Pitchford102 | Sleep efficiency | No | No | No | Actiwatch 2, Philips Respironics Actigraph wGTX3 monitor | Yes (bed time, wake time) | No |
| Wake after sleep onset, min | No | ||||||
| 2017 Van Ryswyk91 | Sleep efficiency, % | No | No | No | Philips Respironics Actiwatches (versions 1 and 2) | Yes (time in bed, daytime naps, intake of caffeine and alcohol, and the time at which they turned lights out for sleep) | No |
| Wake after sleep onset | No | ||||||
| Sleep onset latency | No | ||||||
| 2017 Staunton92 | Sleep efficiency, % | Ratio of sleep time to total time in bed×100 | No | No | Actigraph wGTX3 monitor | No | No |