Table 1.
All | Boys | Girls | p-value | |
---|---|---|---|---|
N | 333 | 238 | 95 | |
Age (years) | 12.71 ± 3.18 | 12.86 ± 3.07 | 12.32 ± 3.42 | 0.157 |
Height (cm) | 159.56 ± 16.92 | 162.30 ± 16.95 | 152.60 ± 14.80 | < 0.001 |
Height-z score | 1.17 ± 0.85 | 1.27 ± 0.83 | 0.94 ± 0.87 | 0.002 |
Weight (kg) | 68.42 ± 23.78 | 72.39 ± 23.66 | 58.46 ± 21.11 | < 0.001 |
Weight-z score | 2.67 ± 1.74 | 2.80 ± 1.73 | 2.35 ± 1.71 | 0.032 |
Body mass index (kg/m2) | 26.04 ± 5.62 | 26.73 ± 5.39 | 24.30 ± 5.85 | < 0.001 |
Body mass index-z score | 2.27 ± 1.71 | 2.34 ± 1.70 | 2.10 ± 1.75 | 0.240 |
Systolic blood pressure (mmHg) | 132.96 ± 10.86 | 135.20 ± 10.80 | 127.20 ± 8.68 | < 0.001 |
Systolic blood pressure-z score | 2.68 ± 0.75 | 2.73 ± 0.77 | 2.56 ± 0.68 | 0.084 |
Diastolic blood pressure (mmHg) | 71.85 ± 8.02 | 71.16 ± 8.24 | 73.64 ± 7.16 | 0.012 |
Diastolic blood pressure-z score | 0.52 ± 1.27 | 0.33 ± 1.36 | 1.01 ± 0.82 | < 0.001 |
Overweight (%) | 21.0 | 21.4 | 20.0 | 0.030 |
Obesity (%) | 64.0 | 66.8 | 56.8 |
Data are shown as mean ± standard deviations or percentages.
To make the data comparable, z scores for each indicator adjusted for age and sex are calculated with the China Health and Nutrition Survey as the reference data.