Table 1.
A list of sleep features used in this study and their short descriptions.
| Features | Description | Unit | |
| Sleep architecture | |||
|
|
Av_tst | Mean total sleep time | Hour |
|
|
Av_time_bed | Mean time in bed | Hour |
|
|
Deep_pct | Mean percentage of deep sleep | % |
|
|
Light_pct | Mean percentage of light sleep | % |
|
|
REM_pct | Mean percentage of REMa sleep | % |
|
|
NREM_pct | Mean percentage of NREMb sleep | % |
|
|
Awake_pct | Mean percentage of awake time | % |
|
|
Av_onset | Mean sleep onset time | Hour |
|
|
Av_offset | Mean sleep offset time | Hour |
|
|
REM_L | Mean REM latency time | Hour |
| Sleep stability | |||
|
|
Std_tst | Standard deviation of total sleep time | Hour |
|
|
Std_onset | Standard deviation of sleep onset time | Hour |
|
|
Std_offset | Standard deviation of sleep offset time | Hour |
| Sleep quality | |||
|
|
Efficiency | Mean sleep efficiency | % |
|
|
Awake_5 | Mean number of awakenings (>5 minutes) per night | Times |
|
|
WKD_diff | Total sleep time difference between weekend and weekdays | Hour |
| Insomnia | |||
|
|
M_insomnia | Percentage of days with potential middle insomnia | % |
| Hypersomnia | |||
|
|
Dur_10 | Percentage of days with total sleep time >10 hours | % |
aREM: rapid eye movement.
bNon-REM: non–rapid eye movement.