No PA1 | Insufficient PA2 | |||||||
---|---|---|---|---|---|---|---|---|
Univariate | Multivariate | Univariate | Multivariate | |||||
OR | 95% CI | OR | 95% CI | OR | 95% CI | OR | 95% CI | |
Grade | ||||||||
7th-9th | 1.00 | 1.00 | 1.00 | 1.00 | ||||
10th-12th | 16.05* | (12.82, 20.08) | 15.06* | (11.98, 18.94) | 2.73* | (2.17, 3.42) | 2.65* | (2.11, 3.34) |
BMI | ||||||||
Low/normal | 1.00 | 1.00 | 1.00 | - | 1.00 | |||
Overweight | 1.32 | (0.87, 1.99) | 1.00 | (0.63, 1.57) | 1.23 | (0.80, 1.89) | 1.11 | (0.71, 1.70) |
Obese | 0.77 | (0.45, 1.31) | 1.28 | (0.71, 2.30) | 1.02 | (0.60, 1.75) | 1.12 | (0.65, 1.95) |
Paternal level of education | ||||||||
Some primary school | 1.00 | 1.00 | 1.00 | - | 1.00 | |||
Completed middle school | 1.05 | (0.82, 1.34) | 1.09 | (0.79, 1.50) | 0.95 | (0.73, 1.22) | 0.92 | (0.67, 1.25) |
Completed high school | 0.91 | (0.71, 1.66) | 1.35 | (0.95, 1.92) | 0.97 | (0.75, 1.26) | 1.05 | (0.75, 1.47) |
Completed higher education | 0.59* | (0.45, 0.77) | 1.37 | (0.91, 2.05) | 0.88 | (0.67, 1.15) | 1.06 | (0.72. 1.56) |
Maternal level of education | ||||||||
Some primary school | 1.00 | 1.00 | 1.00 | - | 1.00 | |||
Completed middle school | 1.03 | (0.82, 1.29) | 1.01 | (0.75, 1.37) | 1.02 | (0.80, 1.30) | 1.08 | (0.80, 1.45) |
Completed high school | 0.73 | (0.57, 0.92) | 0.88 | (0.62, 1.23) | 0.91 | (0.71, 1.64) | 1.05 | (0.75, 1.45) |
Completed higher education | 0.47* | (0.36, 0.63) | 0.89 | (0.59, 1.34) | 0.99 | (0.75, 1.30) | 1.41 | (0.96, 2.07) |
Monthly family income | ||||||||
<1000 RMB | 1.00 | 1.00 | 1.00 | - | 1.00 | |||
1000–1500 RMB | 1.00 | (0.57, 1.75) | 1.07 | (0.63, 2.16) | 0.84 | (0.47, 1.51) | 0.85 | (0.46, 1.55) |
1500–2000 RMB | 0.84 | (0.49, 1.46) | 1.04 | (0.57, 1.92) | 0.95 | (0.54, 1.68) | 0.98 | (0.54, 1.77) |
2000–3000 RMB | 0.62 | (0.37, 1.03) | 0.78 | (0.44, 1.41) | 0.71 | (0.42, 1.22) | 0.72 | (0.41, 1.26) |
3000–4000 RMB | 0.67 | (0.40, 1.11) | 0.92 | (0.51, 1.65) | 0.76 | (0.45, 1.30 ) | 0.75 | (0.43, 1.34) |
4000–5000 RMB | 0.56 | (0.34, 0.95) | 0.82 | (0.45, 1.50) | 0.64 | (0.37, 1.09) | 0.63 | (0.35, 1.13) |
>RMB 5000 | 0.32* | (0.19, 0.53) | 0.48* | (0.27, 0.87) | 0.43* | (0.26, 0.73) | 0.44* | (0.25, 0.78) |
Subjective SES in province | ||||||||
Low | 1.00 | 1.00 | 1.00 | - | 1.00 | |||
Low middle | 0.92 | (0.34, 2.45) | 1.18 | (0.40, 3.52) | 1.10 | (0.38, 3.16) | 1.24 | (0.41, 3.77) |
Middle | 0.56 | (0.22, 1.43) | 1.01 | (0.35, 2.95) | 0.93 | (0.34, 2.56) | 1.21 | (0.41, 3.60) |
High middle | 0.30* | (0.12, 0.76) | 0.88 | (0.30, 2.59) | 0.70 | (0.25, 1.92) | 1.14 | (0.38, 3.43) |
High | 0.19* | (0.07, 0.50) | 0.92 | (0.30, 2.79) | 0.48 | (0.17, 1.37) | 0.94 | (0.31, 2.90) |
Subjective SES in school | ||||||||
Low | 1.00 | 1.00 | 1.00 | - | 1.00 | |||
Low middle | 1.27 | (0.47, 3.41) | 0.94 | (0.32, 2.80) | 1.92 | (0.63, 5.81) | 1.86 | (0.59, 5.86) |
Middle | 1.26 | (0.50, 3.17) | 0.68 | (0.25, 1.90) | 1.94 | (0.68, 5.50) | 1.79 | (0.60, 5.33) |
High middle | 0.91 | (0.36, 2.28) | 0.63 | (0.23, 1.76) | 1.61 | (0.57, 4.56) | 1.68 | (0.57, 5.00) |
High | 0.47* | (0.18, 1.20) | 0.49 | (0.17, 1, 40) | 1.27 | (0.44, 3.66) | 1.54 | (0.51, 4.66) |
Television viewing | ||||||||
None | 1.00 | 1.00 | 1.00 | 1.00 | ||||
>0-2 hours | 0.91 | (0.76, 1.09) | 0.83 | (0.67, 1.03) | 1.18 | (0.98, 1.42) | 1.02 | (0.84, 1.25) |
>2-4 hours | 0.67 | (0.42, 1.06) | 0.68 | (0.40, 1.17) | 0.77 | (0.48, 1.25) | 0.73 | (0.44, 1.21) |
>4 hours | 1.30 | (0.53, 3.16) | 1.21 | (0.44, 3.30) | 0.69 | (0.25, 1.90) | 0.63 | (0.22, 1.81) |
Computer use | ||||||||
None | 1.00 | 1.00 | 1.00 | 1.00 | ||||
>0-2 hours | 1.35* | (1.09, 1.68) | 1.42* | (1.10, 1.82) | 1.57* | (1.26, 1.96) | 1.58* | (1.24, 2.01) |
>2-4 hours | 0.95 | (0.58, 1.55) | 0.96 | (0.54, 1.71) | 0.78 | (0.46, 1.33) | 0.84 | (0.47, 1.47) |
>4 hours | 2.33 | (0.81, 6.64) | 2.66 | (0.85, 8.37) | 1.29 | (0.41, 4.02) | 1.53 | (0.48, 4.88) |