Table 1.
Sociodemographic features of the general sample.
| Total | |||
|---|---|---|---|
| n | % | ||
| Total | 7,097 | 100.0 | |
| Sex | |||
| Boy | 3,538 | 49.9 | |
| Girl | 3,559 | 50.1 | |
| Grade | |||
| 7th | 2,898 | 40.8 | |
| 8th | 2,487 | 35.0 | |
| 9th | 1,712 | 24.1 | |
| Ethnicity | |||
| Han | 6,970 | 98.2 | |
| Minority | 127 | 1.8 | |
| Residence area | |||
| Urban | 5,383 | 75.8 | |
| Rural | 1,714 | 24.2 | |
| Number of proficient sport skills | |||
| 1 | 672 | 9.5 | |
| 2 | 1,965 | 27.7 | |
| 3 and more | 4,460 | 62.8 | |
| Parental highest education | |||
| Primary school or below | 168 | 2.4 | |
| Middle school | 1,358 | 19.1 | |
| High school | 1,894 | 26.7 | |
| Occupational college | 1,631 | 23.0 | |
| University bachelor | 1,668 | 23.5 | |
| Master or higher | 378 | 5.3 | |