Falling asleep (n = 177)* | Χ2 value | φ | P value | |||||||
I could fall asleep quickly. | I had difficulty sleeping. | |||||||||
(n = 153) | (n = 24) | |||||||||
n | % | Adjusted residual | n | % | Adjusted residual | |||||
Breakfast | ||||||||||
(n = 177) | I eat breakfast every morning. | 145 | 81.92 | 3.3 | 18 | 10.17 | −3.3 | 11.13 | 0.25 | 0.00*** |
I sometimes do not eat breakfast. | 8 | 4.52 | −3.3 | 6 | 3.39 | 3.3 | ||||
Bowel movement | ||||||||||
(n = 177) | I have bowel movement every day. | 100 | 56.50 | 1.5 | 12 | 6.78 | −1.5 | 2.11 | 0.11 | 0.15 |
I do not have bowel movement every day. | 53 | 29.94 | −1.5 | 12 | 6.78 | 1.5 | ||||
School meal | ||||||||||
(n = 177) | I always eat a full school meal. | 96 | 54.24 | 0.8 | 13 | 7.34 | −0.8 | 0.65 | 0.06 | 0.42 |
I sometimes leave part of a school meal. | 57 | 32.20 | −0.8 | 11 | 6.21 | 0.8 | ||||
Snack (lunch to dinner) | ||||||||||
(n = 177) | I eat a snack four days or more a week. | 61 | 34.46 | 0.2 | 9 | 5.08 | −0.2 | 0.05 | 0.02 | 0.83 |
I eat a snack less than three days a week. | 92 | 51.98 | −0.2 | 15 | 8.47 | 0.2 | ||||
Snack (dinner to fall asleep) | ||||||||||
(n = 177) | I eat a snack four days or more a week. | 10 | 5.65 | −1.0 | 3 | 3.00 | 1.0 | 0.39 | −0.08 | 0.39a) |
I eat a snack less than three days a week. | 143 | 80.79 | 1.0 | 21 | 11.86 | −1.0 | ||||
Exercise | ||||||||||
(n = 177) | I exercise three or more days a week. | 126 | 71.19 | 1.8 | 16 | 9.04 | −1.8 | 3.22 | 0.14 | 0.07 |
I exercise less than two days a week. | 27 | 15.25 | −1.8 | 8 | 4.52 | 1.8 | ||||
Cram school | ||||||||||
(n = 177) | I am going to cram school. | 126 | 71.19 | 1.2 | 16 | 9.04 | −1.2 | 1.51 | 0.09 | 0.22 |
I am not going to cram school. | 27 | 15.25 | −1.2 | 8 | 4.52 | 1.2 | ||||
Physical strength | ||||||||||
(n = 176) | High | 90 | 51.14 | 1.2 | 11 | 6.25 | −1.2 | 1.52 | 0.09 | 0.22 |
Low | 62 | 35.23 | −1.2 | 13 | 7.39 | 1.2 |