Table 3.
Partial correlation between the main variables
| Variable (No.) | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| The difference in wake‐up time on weekdays (1) | |||||||||||||||||||
| The difference in wake‐up time on weekends (2) | 0.52*** | ||||||||||||||||||
| The difference in sleep time on weekdays (3) | 0.49*** | 0.41*** | |||||||||||||||||
| The difference in sleep time on weekends (4) | 0.25*** | 0.31*** | 0.50*** | ||||||||||||||||
| The difference in sleep duration on weekdays (5) | 0.58*** | 0.15*** | −0.43*** | −0.21*** | |||||||||||||||
| The difference in sleep duration on weekends (6) | 0.18*** | 0.58*** | −0.20*** | −0.38*** | 0.38*** | ||||||||||||||
| The difference in sleep latency on weekdays (7) | 0.25*** | 0.20*** | 0.27*** | 0.20*** | 0.00 | −0.02 | |||||||||||||
| The difference in sleep latency on weekends (8) | 0.15*** | 0.16*** | 0.16*** | 0.15*** | 0.01 | −0.02 | 0.68*** | ||||||||||||
| Sleep quality (9) | −0.09** | −0.07* | −0.22*** | −0.16*** | 0.11*** | 0.16*** | −0.20*** | −0.17*** | |||||||||||
| Daytime nap (10) | 0.10** | 0.02 | 0.10** | 0.02 | 0.02 | −0.02 | 0.01 | −0.01 | −0.03 | ||||||||||
| Exercise (11) | −0.17*** | −0.12*** | −0.21*** | −0.08** | 0.01 | 0.02 | −0.15*** | −0.14*** | 0.23*** | −0.08* | |||||||||
| Learning (work) efficiency (12) | −0.14*** | −0.09** | −0.18*** | −0.10** | 0.02 | 0.04 | −0.11*** | −0.09** | 0.32*** | −0.10** | 0.37*** | ||||||||
| Electronic device use time (13) | 0.15*** | 0.08* | 0.13*** | 0.06 | 0.04 | −0.04 | 0.14*** | 0.07* | −0.12*** | 0.13*** | −0.25*** | −0.20*** | |||||||
| Annoyed (14) | 0.09** | 0.02 | 0.06 | 0.02 | 0.04 | −0.01 | 0.10** | 0.07* | −0.29*** | 0.11*** | −0.23*** | −0.35*** | 0.19*** | ||||||
| Anxious (15) | 0.06 | −0.01 | 0.10** | 0.04 | −0.03 | −0.06 | 0.10** | 0.08* | −0.29*** | 0.13*** | −0.23*** | −0.33*** | 0.17*** | 0.79*** | |||||
| Helpless (16) | 0.10** | 0.02 | 0.11** | 0.05 | 0.00 | −0.04 | 0.10** | 0.07* | −0.29*** | 0.11*** | −0.22*** | −0.33*** | 0.10** | 0.68*** | 0.70*** | ||||
| Uninterested (17) | 0.10** | 0.04 | 0.09** | 0.07* | 0.02 | −0.04 | 0.10** | 0.09** | −0.20*** | 0.07* | −0.20*** | −0.32*** | 0.09** | 0.41*** | 0.40*** | 0.41*** | |||
| Losing control (18) | 0.08* | 0.04 | 0.09** | 0.07* | 0.00 | −0.03 | 0.11*** | 0.08* | −0.23*** | 0.13*** | −0.21*** | −0.38*** | 0.13*** | 0.44*** | 0.44*** | 0.45*** | 0.56*** | ||
| Fatigue (19) | 0.04 | 0.02 | 0.11** | 0.08* | −0.06 | −0.07* | 0.15*** | 0.13** | −0.40*** | 0.11*** | −0.25*** | −0.30*** | 0.16*** | 0.47*** | 0.52*** | 0.49*** | 0.44*** | 0.41*** | |
| Angry (20) | 0.06 | 0.00 | 0.08* | 0.04 | −0.01 | −0.04 | 0.14*** | 0.14*** | −0.31*** | 0.11*** | −0.19*** | −0.30*** | 0.12*** | 0.51*** | 0.54*** | 0.52*** | 0.42*** | 0.44*** | 0.54*** |
The control variables were demographic variables, including gender, age, body mass index (BMI) and education level.
*
p < .05.
**
p < .01.
***
p < .001.