|
Family characteristics
|
|
Economic status
|
|
Non-low (comfortable, somewhat comfortable, normal, somewhat difficult)
|
1119
|
(95.72)
|
1095
|
(96.65)
|
|
Low (difficult)
|
50
|
(4.28)
|
38
|
(3.35)
|
|
Family structure
|
|
Both biological parents
|
964
|
(82.46)
|
928
|
(81.91)
|
|
Single parent or stepfamily
|
205
|
(17.54)
|
205
|
(18.09)
|
|
Family members’ smoking status (mother, father, or others)
| | | | |
|
None
|
565
|
(48.33)
|
527
|
(46.51)
|
|
Yes (≥1 person)
|
604
|
(51.67)
|
606
|
(53.49)
|
|
Child characteristics
|
|
BMI
|
18.92
|
(2.63)
|
19.19
|
(2.57)
|
|
BMI z-score (WHO standard)
|
−0.17
|
(0.68)
|
−0.18
|
(0.63)
|
|
< −2 SD
|
53
|
(4.53)
|
36
|
(3.18)
|
|
≥ −2 SD and < −1 SD
|
215
|
(18.39)
|
220
|
(19.42)
|
|
≥ −1 SD and < +1 SD
|
793
|
(67.84)
|
797
|
(70.34)
|
|
≥ +1 SD and < +2 SD
|
94
|
(8.04)
|
67
|
(5.91)
|
|
≥ +2 SD
|
14
|
(1.20)
|
13
|
(1.15)
|
|
Grade in school
|
|
7th
|
396
|
(33.88)
|
387
|
(34.16)
|
|
8th
|
382
|
(32.68)
|
361
|
(31.86)
|
|
9th
|
391
|
(33.45)
|
385
|
(33.98)
|
|
Breakfast skipping
|
|
No (eat breakfast daily)
|
1032
|
(88.28)
|
963
|
(85.00)
|
|
Yes (skip breakfast ≥ 1 time per week)
|
137
|
(11.72)
|
170
|
(15.00)
|
|
Convenience stores or fast-food outlets
|
|
< 1 time per week
|
959
|
(82.04)
|
961
|
(84.82)
|
|
≥ 1 time per week
|
210
|
(17.96)
|
172
|
(15.18)
|
|
Club activities at school
|
|
Physical
|
850
|
(72.71)
|
575
|
(50.75)
|
|
Non-physical
|
77
|
(6.59)
|
322
|
(28.42)
|
|
No participation
|
242
|
(20.70)
|
236
|
(20.83)
|
|
Activities outside of school
|
|
Yes
|
398
|
(34.05)
|
466
|
(41.13)
|
|
No
|
771
|
(65.95)
|
667
|
(58.87)
|
|
Sleeping patterns
|
|
≥ 6 h 30 min per day (Q2–Q5)
|
955
|
(81.69)
|
826
|
(72.90)
|
|
< 6 h 30 min per day (Q1)
|
214
|
(18.31)
|
307
|
(27.10)
|
|
Self-rated health status
|
|
Good (excellent, good, fair)
|
1084
|
(92.73)
|
1033
|
(91.17)
|
|
Not good (somewhat poor or poor)
|
85
|
(7.27)
|
100
|
(8.83)
|
|
Smoking status
| | | | |
|
No
|
1,126
|
(96.32)
|
1107
|
(97.71)
|
|
Yes
|
43
|
(3.68)
|
26
|
(2.29)
|
