|
Overall
|
625
|
100.0
|
|
Okayama in 2010
|
303
|
48.5
|
|
Tokyo in 2014
|
322
|
51.5
|
|
Sex
|
|
Male
|
330
|
52.8
|
|
Female
|
295
|
47.2
|
|
Grade level
|
|
Lower grades
|
173
|
27.7
|
|
Higher grades
|
452
|
72.3
|
|
Body mass index (kg/m2)
|
|
Mean ± SD
|
16.9 ± 2.7
|
|
Z score (median, 25 to 75%ile)
|
−0.19, −0.65 to 0.40
|
|
Sedentary time, min/week
|
|
Weekdays
|
Mean ± SD
|
|
Reading or listening to music
|
90.3 ± 123.4
|
|
TV or video viewing
|
535.0 ± 356.6
|
|
TV game use
|
167.3 ± 222.1
|
|
Computer use excluding class
|
23.9 ± 70.9
|
|
Doing homework or assignments
|
264.9 ± 185.3
|
|
Car travel
|
33.4 ± 61.2
|
|
Weekends
|
Mean ± SD
|
|
Reading or listening to music
|
42.1 ± 70.0
|
|
TV or video viewing
|
323.9 ± 232.0
|
|
TV game use
|
123.0 ± 96.4
|
|
Computer use excluding class
|
15.8 ± 49.9
|
|
Doing homework or assignments
|
74.4 ± 96.4
|
|
Car travel
|
71.3 ± 84.9
|
|
Physical activitya, number of days/week
|
|
Mean ± SD
|
3.0 ± 2.2
|
|
Z score (median, 25 to 75 percent tile)
|
−0.12, −0.82 to 0.77
|
