| 1. |
4-5 |
n=175 |
Bed time (weekday) |
10.0 ± 0.9 |
9.9 ± 1.1 |
9.6 ± 1.0 |
0.38 |
| Wakeup time (weekday) |
7.0 ± 0.80 |
7.4 ± 1.9 |
7.1 ± 1.3 |
0.18 |
| Boys=115 |
Night Time Sleep (weekday) |
9.1 ± 1.0 |
9.5 ± 1.4 |
9.2 ± 1.2 |
0.03 |
| Bed time (weekend) |
10.0 ± 1.2 |
10.0 ± 1.4 |
10.0 ± 1.3 |
0.90 |
| Girls=60 |
Wakeup time (weekend) |
9.1 ± 1.1 |
9.4 ± 1.3 |
9.2 ± 1.2 |
0.11 |
| Night Time Sleep (weekend) |
11.1 ± 0.5 |
11.4 ± 0.6 |
11.2 ± 0.6 |
0.003 |
| 2. |
6-10 |
n=540 |
Bed time (weekday) |
9.9 ± 1.1 |
9.9 ± 0.9 |
9.9 ± 1.0 |
0.64 |
| Wakeup time (weekday) |
7.0 ± 1.1 |
6.6 ± 0.9 |
6.9 ± 1.1 |
<0.001 |
| Boys=345 |
Night Time Sleep (weekday) |
9.1 ± 1.1 |
8.7 ± 1.1 |
8.9 ± 1.1 |
<0.001 |
| Bed time (weekend) |
10.6 ± 1.4 |
10.4 ± 1.0 |
10.5 ± 1.3 |
0.06 |
| Girls=195 |
Wakeup time (weekend) |
9.1 ± 1.1 |
8.7 ± 1.0 |
8.9 ± 1.1 |
<0.001 |
| Night Time Sleep (weekend) |
10.5 ± 0.9 |
10.3 ± 1.4 |
10.4 ± 1.1 |
0.11 |
| 3. |
11-15 |
n=335 |
Bed time (weekday) |
10.1 ± 1.0 |
10.1 ± 1.3 |
10.1 ± 1.1 |
0.86 |
| Wakeup time (weekday) |
6.7 ± 1.1 |
6.9 ± 1.0 |
6.8 ± 1.1 |
0.02 |
| Boys=205 |
Night Time Sleep (weekday) |
8.6 ± 1.2 |
8.8 ± 1.3 |
8.8 ± 1.3 |
0.07 |
| Bed time (weekend) |
9.6 ± 1.0 |
10.3 ± 1.4 |
9.9 ± 1.2 |
<0.001 |
| Girls=130 |
Wakeup time (weekend) |
8.6 ± 1.3 |
8.9 ± 1.4 |
8.7 ± 1.3 |
0.08 |
| Night Time Sleep (weekend) |
10.9 ± 1.0 |
10.6 ± 1.2 |
10.9 ± 1.1 |
0.006 |
| 4. |
Total participants |
N=1050 |
Bed time (weekday) |
10.0 ± 1.1 |
9.9 ± 1.1 |
9.9 ± 1.0 |
0.63 |
| Wakeup time (weekday) |
6.9 ± 1.1 |
6.8 ± 1.2 |
6.9 ± 1.1 |
0.19 |
| Boys=665 |
Night Time Sleep (weekday) |
8.9 ± 1.2 |
8.9 ± 1.3 |
8.9 ± 1.2 |
0.51 |
| Bed time (weekend) |
10.2 ± 1.4 |
10.3 ± 1.2 |
10.2 ± 1.3 |
0.14 |
| Girls=385 |
Wakeup time (weekend) |
9.0 ± 1.2 |
8.9 ± 1.3 |
8.9 ± 1.2 |
0.36 |
| Night Time Sleep (weekend) |
10.8 ± 0.9 |
10.6 ± 1.3 |
10.7 ± 1.1 |
0.03 |