Table 1 Domain-specific daily summary outcome measures
Domain | Outcome measure | Description |
|---|---|---|
Device wear | Wear duration | Total duration device was worn while collecting data |
Non-wear duration | Total duration device was non worn while collecting data | |
Gait | Longest bout duration | Duration of the longest walking bout |
Longest bout steps | Number of steps in the longest walking bout | |
Three-minute bouts | Number of walking bouts of three minutes or longer duration | |
Total steps | Total number of steps | |
Activity | Sedentary duration | Total duration of sedentary (does not include sleep) |
Light activity duration | Total duration of light activity | |
Moderate activity duration | Total duration of moderate activity | |
Vigorous activity duration | Total duration of vigorous activity | |
Sleepa | Sleep window duration | Total duration of all SPTWs that contain detected sleep |
Sleep duration | Total duration of sleep detected | |
Sleep-to-wake duration | Total duration from first sleep onset to last wake onset in all SPTWs that contain sleep | |
Sleep efficiency | Decimal fraction of sleep duration relative to sleep window duration (Sleep duration / Sleep-to-wake duration) | |
Wake duration after sleep onset | Duration of time spent awake between first sleep onset and last wake onset (Sleep-to-wake duration – Sleep duration) |