Table 1 Percentage of sleep disturbance and the percentage of three YDQ categories
n | Sleep disturbance | YDQ score | |||||
|---|---|---|---|---|---|---|---|
Yes | p-value | ≤2 | 3–4 | ≥5 | p-value | ||
Total | 5264 | 50.5% | 62.3% | 25.6% | 12.1% | ||
Boys | 2635 | 46.0% | 67.4% | 23.1% | 9.4% | ||
School type | .047 | .012 | |||||
Public school | 2017 | 45.0% | 67.0% | 24.2% | 8.8% | ||
Private school | 618 | 49.5% | 68.8% | 19.6% | 11.7% | ||
School-commute time (hours/day) | .001 | .962 | |||||
< 0.5 | 1432 | 43.1% | 67.9% | 22.6% | 9.6% | ||
≥ 0.5, < 1 | 947 | 48.4% | 66.8% | 23.8% | 9.4% | ||
≥ 1 | 249 | 54.2% | 66.7% | 24.1% | 9.2% | ||
School sports or clubs (hours/day) | <.001 | <.001 | |||||
None | 757 | 52.2% | 60.2% | 26.8% | 12.9% | ||
< 1 | 60 | 53.3% | 50.0% | 28.3% | 21.7% | ||
≥ 1, < 2 | 204 | 47.1% | 59.8% | 26.0% | 14.2% | ||
≥ 2 | 1601 | 42.7% | 72.3% | 20.9% | 6.8% | ||
Extracurricular learning (hours/day) | .358 | .072 | |||||
None | 454 | 44.5% | 72.7% | 17.6% | 9.7% | ||
< 1 | 842 | 45.5% | 66.3% | 24.8% | 8.9% | ||
≥ 1, < 2 | 864 | 45.4% | 65.2% | 24.8% | 10.1% | ||
≥ 2 | 473 | 49.7% | 68.5% | 22.4% | 9.1% | ||
Television viewing time (hours/day) | .156 | .687 | |||||
None | 243 | 51.4% | 66.7% | 23.9% | 9.5% | ||
< 1 | 485 | 46.2% | 67.6% | 23.3% | 9.1% | ||
≥ 1, < 2 | 1049 | 44.2% | 69.2% | 22.3% | 8.5% | ||
≥ 2, < 3 | 398 | 43.2% | 68.1% | 22.6% | 9.3% | ||
≥ 3, < 5 | 324 | 50.3% | 63.0% | 24.7% | 12.3% | ||
≥ 5 | 122 | 47.5% | 63.1% | 25.4% | 11.5% | ||
Skipped meals (times/week) | <.001 | <.001 | |||||
None | 1963 | 41.5% | 69.7% | 22.5% | 7.8% | ||
< 2 | 335 | 57.6% | 62.4% | 24.5% | 13.1% | ||
≥ 2, < 7 | 139 | 56.1% | 61.2% | 27.3% | 11.5% | ||
≥ 7, < 14 | 78 | 66.7% | 57.7% | 20.5% | 21.8% | ||
≥ 14 | 112 | 64.3% | 58.0% | 25.9% | 16.1% | ||
Depressed mood | <.001 | <.001 | |||||
Not at all | 555 | 29.0% | 82.0% | 14.8% | 3.2% | ||
Not so much | 906 | 39.3% | 71.6% | 23.5% | 4.9% | ||
Yes | 830 | 60.0% | 59.6% | 24.8% | 15.5% | ||
Often | 340 | 57.9% | 51.2% | 31.8% | 17.1% | ||
School-life satisfaction | <.001 | <.001 | |||||
Satisfied | 993 | 34.1% | 77.2% | 18.8% | 3.9% | ||
More or less satisfied | 1035 | 47.4% | 67.0% | 24.8% | 8.2% | ||
Not really satisfied | 413 | 62.5% | 52.5% | 27.1% | 20.3% | ||
Dissatisfied | 186 | 64.5% | 50.5% | 27.4% | 22.0% | ||
Girls | 2629 | 55.0% | 57.1% | 28.1% | 14.8% | ||
School type | .034 | .975 | |||||
Public school | 1980 | 53.8% | 57.0% | 28.2% | 14.8% | ||
Private school | 649 | 58.6% | 57.5% | 27.9% | 14.6% | ||
School-commute time (hours/day) | <.001 | .369 | |||||
< 0.5 | 1212 | 52.4% | 55.4% | 28.8% | 15.8% | ||
≥ 0.5, < 1 | 1092 | 55.0% | 59.1% | 26.8% | 14.1% | ||
≥ 1 | 320 | 65.0% | 56.6% | 30.0% | 13.4% | ||
School sports or clubs (hours/day) | .087 | .373 | |||||
None | 1520 | 56.3% | 55.2% | 29.3% | 15.5% | ||
< 1 | 70 | 61.4% | 54.3% | 28.6% | 17.1% | ||
≥ 1, < 2 | 180 | 57.8% | 60.6% | 25.6% | 13.9% | ||
≥ 2 | 842 | 51.7% | 60.0% | 26.6% | 13.4% | ||
Extracurricular learning (hours/day) | .102 | .001 | |||||
None | 259 | 61.8% | 50.2% | 30.1% | 19.7% | ||
< 1 | 694 | 55.3% | 53.0% | 29.8% | 17.1% | ||
≥ 1, < 2 | 954 | 53.1% | 58.1% | 28.7% | 13.2% | ||
≥ 2 | 722 | 54.6% | 62.2% | 24.9% | 12.9% | ||
Television viewing time (hours/day) | .071 | .015 | |||||
None | 112 | 66.1% | 51.8% | 25.9% | 22.3% | ||
< 1 | 362 | 56.4% | 58.8% | 25.4% | 15.7% | ||
≥ 1, < 2 | 990 | 53.0% | 59.4% | 27.2% | 13.4% | ||
≥ 2, < 3 | 515 | 53.2% | 58.4% | 29.7% | 11.8% | ||
≥ 3, < 5 | 477 | 54.7% | 54.5% | 28.1% | 17.4% | ||
≥ 5 | 158 | 60.8% | 46.8% | 34.8% | 18.4% | ||
Skipped meals (times/week) | <.001 | <.001 | |||||
None | 1688 | 48.6% | 61.4% | 25.8% | 12.8% | ||
< 2 | 538 | 62.6% | 51.5% | 33.1% | 15.4% | ||
≥ 2, < 7 | 203 | 72.9% | 48.8% | 32.0% | 19.2% | ||
≥ 7, < 14 | 100 | 75.0% | 46.0% | 29.0% | 25.0% | ||
≥ 14 | 98 | 64.3% | 41.8% | 32.7% | 25.5% | ||
Depressed mood | <.001 | <.001 | |||||
Not at all | 310 | 29.4% | 78.4% | 18.4% | 3.2% | ||
Not so much | 814 | 46.1% | 65.1% | 26.2% | 8.7% | ||
Yes | 1098 | 64.3% | 48.1% | 31.9% | 20.0% | ||
Often | 406 | 67.0% | 49.0% | 29.3% | 21.7% | ||
School-life satisfaction | <.001 | <.001 | |||||
Satisfied | 948 | 44.2% | 67.0% | 24.5% | 8.5% | ||
More or less satisfied | 1163 | 57.5% | 55.1% | 30.7% | 14.2% | ||
Not really satisfied | 371 | 68.5% | 43.7% | 30.5% | 25.9% | ||
Dissatisfied | 141 | 71.6% | 41.8% | 24.8% | 33.3% | ||