Table 1.
Descriptive statistics for background, time use, sleep, alertness, and wellbeing of 154 individuals.
| Time Use Data Collected by Mobile App and Survey Data | Mean | SD |
|---|---|---|
| Age | 41.7 | 0.5 |
| Work-related mobile phone use during off-hours (range: 5–25) | 18.8 | 6.9 |
| Mean working hours/day | 7.4 | 2.9 |
| Mean working hours without pay/day | 2.2 | 2.5 |
| Mean sleeping hours/day | 8.3 | 2.7 |
| Mean midsleep time (o’clock) | 3:07 | 1:20 |
| Mean feeling at work/day (range: bad, neutral, good) | 2.4 | 0.6 |
| Mean importance of work/day (range: bad, neutral, good) | 1.6 | 1.1 |
| % | ||
| Sex (women) | 42% | |
| Works evening hours (18:00–23:00, yes) | 12% | |
| Working day includes several periods of work | 30% | |
| Working hours affect sleep and alertness (often/somewhat) | 59% | |
| Working hours affect wellbeing (often/somewhat) | 44% | |