Characterization of sleep in groups
| Group | PSQI score (0–21: no to severe sleep disturbance) | MEQ score (16–86: A.M. to P.M. preference) | Hours of intervening sleep | Quality of intervening sleep (1–10 self-assessed) |
|---|---|---|---|---|
| Incidental day first | 6.1 ± 1.8 | 42.3 ± 9.3 | 5.4 ± 1.6 | 7.4 ± 1.1 |
| Incidental night first | 5.7 ± 2.2 | 39.0 ± 8.7 | 6.1 ± 1.8 | 6.3 ± 2.3 |
| Intentional day first | 5.8 ± 1.8 | 47.0 ± 6.2 | 5.4 ± 2.0 | 7.5 ± 1.2 |
| Intentional night first | 5.5 ± 2.3 | 48.3 ± 8.7 | 5.9 ± 0.8 | 6.8 ± 1.7 |
| Diurnal control (A.M.) | 5.8 ± 2.3 | 45.3 ± 8.6 | 6.7 ± 1.3 | 7.8 ± 1.5 |
| Diurnal control (P.M.) | 5.7 ± 1.9 | 44.6 ± 10.1 | 8.0 ± 1.4 | 7.6 ± 1.2 |