MVPA(past 7 days)
1 = 0天
2 = 1天
3 = 2天
4 = 3天
5 = 4天
6 = 5天
7 = 6天
8 = 7天

Playing on sport teams run by school (past 12 months)
1 = 从不
2 = 每月1-3次
3 = 每周1-2次
4 = 每周3次以上

Self-Rated Cardiovascular Health
1 = 非常差
2 = 差
3 = 一般
4 = 好
5 = 非常好

Watching TV, videos in weekday
1 = 0天
2 = 半小时/天
3 = 1小时/天
4 = 2小时/天
5 = 3小时/天
6 = 4小时/天
7 = 5小时/天
8 = 6小时/天
9 = 7小时及以上/天

您认为自己的睡眠质量
1 = 很好
2 = 较好
3 = 较差
4 = 很差

其它影响睡眠的事情
1 = 没有
2 = ＜1次/周
3 = 1-2次/周
4 = ≥3次/周

你认为你的健康状况是 self rated health
1 = 差
2 = 一般
3 = 好
4 = 非常好
5 = 极好

是否达到MVPA指南
1 = not meet
2 = meet

guideline8种组合
1 = none
2 = MVPA only
3 = screen only
4 = sleep only
5 = MVPA & screen
6 = MVPA & sleep
7 = screen & sleep
8 = three

guideline4种组合
0 = none
1 = one
2 = two
3 = three

Grade
1 = 一年级
2 = 二年级
3 = 三年级
4 = 四年级
5 = 五年级
6 = 六年级
7 = 初一
8 = 初二
9 = 初三
10 = 高一
11 = 高二

Gender
1 = boy
2 = girl

Residence
1 = 城市
2 = 城镇（城郊）
3 = 城市

Siblings
1 = yes
2 = no

Father Education Level
1 = 初中及以下（包括初中）
2 = 高中/中专/职高/技校
3 = 大学/大专/高职
4 = 研究生
5 = 不知道

1 = very poor
2 = poor
3 = average
4 = good
5 = very good