| Primary school (n = 472, 9.1 ± 0.9ys) | Middle school (n = 1711, 13.2 ± 1.3ys) | High school (n = 470, 16.0 ± 0.7ys) | |||
---|---|---|---|---|---|---|
OR | 95% CI | OR | 95% CI | OR | 95% CI | |
AA | ||||||
 Not meet the PA guidelines | 1 |  | 1 |  | 1 |  |
 Meet the PA guidelines | 1.53 | 0.92–2.52 | 1.68 | 1.18–2.40 | 1.68 | 0.70–4.04 |
AB | ||||||
 Not meet the PA guidelines | 1 |  | 1 |  | 1 |  |
 Meet the PA guidelines | 1.70 | 0.99–2.93 | 1.77 | 1.08–2.91 | 3.28 | 0.45–24.11 |