Table 1.
Sleep variables measured in parents and children
| Sleep variables | Parents | Children | p | |
|---|---|---|---|---|
| Weekday | ||||
| Bedtime | (h) | 23.1 (1.3) | 21.5 (0.6) | <0.001 |
| Sleep end time | (h) | 6.4 (0.9) | 7.1 (0.5) | <0.001 |
| Sleep period | (h) | 7.0 (1.2) | 9.5 (0.5) | <0.001 |
| Weekend | ||||
| Bedtime | (h) | 23.5 (1.3) | 22.0 (0.9)* | <0.001 |
| Sleep end time | (h) | 7.6 (1.7)* | 7.4 (0.7)* | ns |
| Sleep period | (h) | 8.1 (1.3)* | 9.3 (0.8) | <0.001 |
| Sleep latency | (min) | 16.6 (13.8) | 8.8 (4.5) | <0.001 |
| Sleep efficiency | (%) | – | 90.3 (5.6) | – |
| Sleep problems identified by parents | – | 17 (36)† | – | |
| ESS score | 3.9 (5.0) | – | – | |
| ESS score >10 | 6 (13)† | – | – | |
| PSQI score | 4.6 (2.2) | – | – | |
| PSQI score >5 | 16 (34)† | – | – | |
| Sleep satisfaction | 31 (66)† | – | – | |
For parents, the sleep end time was later and the sleep period was longer on the weekend than on weekdays. Children's sleep schedules were later on the weekend than on weekdays; no difference in the sleep period was noted. Parents had a later bedtime, an earlier sleep end time and a shorter sleep period than their children on weekdays.
p values are from the analysis of variance between parents and children.
Significant difference between weekdays and weekends.
Data are shown as mean (standard deviation) or number of incidences (%).
Sleep variables were obtained differently for the children (actigraphy) and the parents (questionnaires).
ESS, Epworth Sleepiness Scale. PSQI, Pittsburgh Sleep Quality Index. ns, not significant.