Nocturnal and daytime sleep measures derived from actigraphy data
| Variable name | Abbreviation | Description |
|---|---|---|
| Total night sleeping time | TNST | Total night sleeping time is calculated as the sum of all minutes scored as sleep during time in bed. |
| Number of nocturnal sleeping bouts | NNSB | Number of nocturnal sleeping bouts during time in bed. A higher NNSB indicates more fragmented sleep. |
| Duration of nocturnal sleeping bouts | DNSB | Average duration of nocturnal sleeping bouts during time in bed. A higher DNSB indicates longer sleeping bouts and, in turn, less nocturnal sleeping disturbances. |
| Sleep efficiency | Seff | Sleep efficiency defined as the ratio of TNST and time in bed. |
| Wake after sleep onset | WASO | Time spent awake during time in bed after the first nocturnal sleep onset. |
| Total day sleeping time | TDST | Total day sleeping time defined as the total time spent asleep during the out of bed period. |
| Number of daytime sleeping bouts | NDSB | Number of daytime sleeping bouts indicates how many naps a patient takes during the day. |
| Duration of daytime sleeping bouts | DDSB | Average duration of daytime sleeping bouts during the day. A higher DDSB indicates longer naps. |