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 | 5.72* | (4.86, 6.72) | 5.48* | (4.64, 6.47) | 2.27* | (1.96, 2.64) | 2.26* | (1.94, 2.64) |
BMI | ||||||||
Low/normal | 1.00 | 1.00 | 1.00 | - | 1.00 | |||
Overweight | 0.88 | (0.70, 1.11) | 0.95 | (0.74, 1.22) | 0.91 | (0.73, 1.13) | 0.93 | (0.75, 1.16) |
Obese | 1.00 | (0.75, 1.34) | 1.21 | (0.88, 1.65) | 0.91 | (0.69, 1.20) | 0.97 | (0.73, 1.29) |
Paternal level of education | ||||||||
Some primary school | 1.00 | 1.00 | 1.00 | - | 1.00 | |||
Completed middle school | 0.95 | (0.77, 1.17) | 0.99 | (0.76, 1.29) | 0.83 | (0.68, 1.02) | 0.92 | (0.72, 1.19) |
Completed high school | 0.70 | (0.57, 0.87) | 0.77 | (0.58, 1.02) | 0.84 | (0.69, 1.02) | 0.97 | (0.75, 1.27) |
Completed higher education | 0.58* | (0.46, 0.74) | 0.86 | (0.60, 1.23) | 0.75 | (0.61, 0.93) | 0.96 | (0.70, 1.32) |
Maternal level of education | ||||||||
Some primary school | 1.00 | 1.00 | 1.00 | - | 1.00 | |||
Completed middle school | 0.93 | (0.77, 1.13) | 1.05 | (0.81, 1.35) | 0.83 | (0.69, 1.0) | 0.89 | (0.70, 1.13) |
Completed high school | 0.73 | (0.59, 0.90) | 1.0 | (0.75, 1.32) | 0.77 | (0.63, 0.93) | 0.84 | (0.65, 1.09) |
Completed higher education | 0.58* | (0.45, 0.74) | 1.08 | (0.75, 1.55) | 0.75 | (0.60, 0.94) | 1.02 | (0.74, 1.41) |
Monthly family income | ||||||||
<1000 RMB | 1.00 | 1.00 | 1.00 | - | 1.00 | |||
1000–1500 RMB | 1.00 | (0.64, 1.55) | 1.13 | (0.70, 1.82) | 0.97 | (0.62, 1.51) | 0.97 | (0.61, 1.55) |
1500–2000 RMB | 0.52 | (0.34, 0.80) | 0.60 | (0.37, 0.96) | 0.84 | (0.55, 1.29) | 0.86 | (0.55, 1.36) |
2000–3000 RMB | 0.65 | (0.43, 0.97) | 0.81 | (0.51, 1.27) | 0.95 | (0.64, 1.43) | 0.98 | (0.63, 1.52) |
3000–4000 RMB | 0.52 | (0.35, 0.78) | 0.71 | (0.45, 1.10) | 0.76 | (0.51, 1.13) | 0.81 | (0.53, 1.25) |
4000–5000 RMB | 0.51 | (0.34, 0.78) | 0.78 | (0.49, 1.24) | 0.81 | (0.53, 1.21) | 0.91 | (0.58, 1.42) |
>RMB 5000 | 0.32* | (0.21, 0.47) | 0.49* | (0.31, 0.77) | 0.55* | (0.37, 0.81) | 0.62 | (0.40, 0.95) |
Subjective SES in province | ||||||||
Low | 1.00 | 1.00 | 1.00 | - | 1.00 | - | ||
Low middle | 1.11 | (0.56, 2.19) | 1.35 | (0.63, 2.90) | 0.79 | (0.41, 1.53) | 0.78 | (0.38, 1.60) |
Middle | 0.78 | (0.41, 1.53) | 1.29 | (0.61, 2.74) | 0.83 | (0.44, 1.56) | 0.94 | (0.47, 1.92) |
High middle | 0.48* | (0.25, 0.92) | 1.28 | (0.59, 2.74) | 0.67 | (0.35, 1.26) | 1.04 | (0.51, 2.14) |
High | 0.37* | (0.18, 0.73) | 1.44 | (0.64, 3.23) | 0.49* | (0.25, 0.96) | 1.01 | (0.48, 2.15) |
Subjective SES in school | ||||||||
Low | 1.00 | 1.00 | 1.00 | - | 1.00 | - | ||
Low middle | 0.79 | (0.40, 1.55) | 0.71 | (0.34, 1.50) | 0.86 | (0.44, 1.68) | 0.84 | (0.41, 1.70) |
Middle | 0.89 | (0.47, 1.69) | 0.74 | (0.37, 1.49) | 1.04 | (0.56, 1.94) | 0.91 | (0.46, 1.77) |
High middle | 0.51 | (0.27, 0.97) | 0.44* | (0.22, 0.89) | 0.71 | (0.38, 1.32) | 0.61 | (0.31, 1.19) |
High | 0.41* | (0.21, 0.79) | 0.45* | (0.22, 0.95) | 0.48* | (0.25, 0.93) | 0.48* | (0.24, 0.96) |
Television viewing | ||||||||
None | 1.00 | 1.00 | 1.00 | 1.00 | ||||
>0-2 hours | 0.81* | (0.69, 0.95) | 0.81* | (0.68, 0.96) | 1.21* | (1.05, 1.39) | 1.21* | (1.04, 1.41) |
>2-4 hours | 0.70 | (0.49, 1.00) | 0.64 | (0.43, 0.96) | 0.73 | (0.51, 1.03) | 0.75 | (0.52, 1.09) |
>4 hours | 0.40* | (0.23, 0.70) | 0.34* | (0.18, 0.64) | 0.38* | (0.22, 0.66) | 0.42* | (0.23, 0.76) |
Computer use | ||||||||
None | 1.00 | 1.00 | 1.00 | 1.00 | ||||
>0-2 hours | 1.04 | (0.88, 1.24) | 1.06 | (0.88, 1.28) | 1.08 | (0.92, 1.27) | 1.00 | (0.84, 1.18) |
>2-4 hours | 0.96 | (0.69, 1.35) | 1.04 | (0.71, 1.51) | 0.81 | (0.58, 1.12) | 0.82 | (0.58, 1.16) |
>4 hours | 0.56* | (0.36, 0.86) | 0.64 | (0.39, 1.05) | 0.41* | (0.27, 0.63) | 0.49* | (0.30, 0.78) |