Model 1 | Model 2 | ||
---|---|---|---|
Rate ratio | Rate ratio | ||
Age (reference: 12 years) | Age 14 years | 1.15* (1.02, 1.30) | 1.14* (1.01, 1.29) |
Age 17 years | 1.43*** (1.27, 1.62) | 1.43*** (1.27, 1.62) | |
Sex (female) | 1.45*** (1.31, 1.60) | 1.46*** (1.32, 1.61) | |
City (rural) | 1.29*** (1.16, 1.43) | 1.27*** (1.14, 1.42) | |
Ethnicity: (reference: Han) | Ethnicity Zhuang | 1.84*** (1.65, 2.04) | 1.84*** (1.65, 2.05) |
Ethnicity Yao | 0.36*** (0.30, 0.43) | 0.35*** (0.29, 0.42) | |
TV (reference: <30 minutes/day) | 30-60 minutes | 1.03 (0.90, 1.17) | 1.04 (0.91, 1.18) |
60-120 minutes | 1.22** (1.07, 1.40) | 1.23** (1.07, 1.41) | |
120-180 minutes | 1.25* (1.04, 1.49) | 1.25* (1.05, 1.50) | |
>180 minutes | 1.28** (1.06, 1.55) | 1.29** (1.07, 1.55) | |
Drink milk (reference: never) | Sometimes | 0.90 (0.77, 1.05) | |
Every day | 0.94 (0.78, 1.15) | ||
Twice a day | 0.87 (0.67, 1.14) | ||
Breakfast (Have breakfast most days) | 0.96 (0.82, 1.12) |