Table 2.
Sleep timing and duration, social jetlag and sleep quality before and during restrictions.
| Before Restrictions | During Restrictions | |
|---|---|---|
| Alarm clock use (p < 0.001) | ||
| Yes | 639 (80%) | 306 (38%) |
| No | 162 (20%) | 495 (62%) |
| Midsleep work day (p < 0.001) | ||
| Midnight-2am | 32 (4%) | 22 (3%) |
| 2am–4am | 566 (71%) | 313 (39%) |
| 4am–6am | 178 (22%) | 359 (45%) |
| Later than 6am | 25 (3%) | 107 (13%) |
| Midsleep free day (p < 0.001) | ||
| Midnight-2am | 13 (2%) | 20 (2%) |
| 2am–4am | 371 (46%) | 234 (29%) |
| 4am–6am | 354 (44%) | 398 (50%) |
| Later than 6am | 63 (8%) | 149 (19%) |
| Social Jetlag (p < 0.001) | ||
| No SJL | 148 (18%) | 361 (45%) |
| Less than 1 h | 236 (30%) | 223 (28%) |
| 1–2 h | 310 (39%) | 168 (21%) |
| 2–3 h | 82 (10%) | 33 (4%) |
| More than 3 h | 25 (3%) | 16 (2%) |
| PSQI | ||
| Good sleeper | – | 205 (27%) |
| Poor sleeper | – | 549 (73%) |
| Sleep start work day (p < 0.001) | 23:35 (SE = 0:04) | 00:23 (SE = 0:05) |
| Sleep end work day (p < 0.001) | 07:15 (SE = 0:04) | 08:11 (SE = 0:06) |
| Sleep start free day (p < 0.001) | 00:13 (SE = 0:05) | 00:44 (SE = 0:06) |
| Sleep end free day (p < 0.001) | 08:46 (SE = 0:06) | 08:56 (SE = 0:07) |
| Sleep duration work day (p = 0.012) | 7 h 40 mins (SE = 0:04) | 7 h 48 mins (SE = 0:06) |
| Sleep duration free day (p < 0.001) | 8 h 33 mins (SE = 0:05) | 8 h 11 mins (SE = 0:06) |
| Social Jetlag (p < 0.001) | 1 h 6min (SE = 0:02) | 36 min (SE = 0:01) |
| Sleep Debt (p < 0.001) | 34 min (SE = 0:01) | 18min (SE = 0:01) |