| Table14 |
| Bedtime X grade X gender |
| % |
| |
|
Before 10 PM |
Around 10 PM |
Around 11 PM |
Around midnight |
Around 1 AM |
After 1 AM |
| Total |
3.6 |
13.9 |
40.4 |
29.5 |
8.6 |
4.0 |
| |
|
|
42.1 |
| Grade |
7th |
5.8 |
21.5 |
50.3 |
16.3 |
3.9 |
2.2 |
| |
|
|
22.4 |
| 8th |
3.7 |
14.3 |
42.0 |
29.6 |
7.6 |
2.8 |
| |
|
|
40.0 |
| 9th |
1.1 |
5.1 |
28.0 |
43.9 |
14.7 |
7.2 |
| |
|
|
65.8 |
| Gender |
Male |
4.6 |
16.8 |
39.6 |
26.5 |
8.1 |
4.4 |
| |
|
|
39.0 |
| Female |
2.6 |
10.8 |
41.3 |
32.7 |
9.1 |
3.5 |
| |
|
|
45.3 |
|
|