| Smokers |
| Non-smokers |
| Mann-Whitney U-test | ||||
|
|
|
|
| z |
| P | ||
WD Bedtime | 24.9 ± 1.2 | (68) |
| 24.5 ± 1.2 | (1286) |
| −2.304 |
| 0.021 |
WE Bedtime | 25.9 ± 1.5 | (67) |
| 25.2 ± 1.5 | (1312) |
| −3.749 |
| <0.001 |
WD Wake up time | 7.8 ± 1.0 | (70) |
| 7.3 ± 0.9 | (1406) |
| −4.880 |
| <0.001 |
WE Wake up time | 10.4 ± 2.2 | (69) |
| 9.4 ± 1.7 | (1411) |
| −1.478 |
| <0.001 |
WD Sleep hours | 6.9 ± 1.2 | (68) |
| 6.7 ± 1.2 | (1278) |
| −1.975 |
| 0.048 |
WE Sleep hours | 8.6 ± 1.7 | (67) |
| 8.2 ± 1.6 | (1311) |
| −2.511 |
| 0.012 |