Demographic information of the respondents
| Age group (years) | 3–6 | 7–10 | 11–14 | Total |
| n (%)* | 3153 (34.28) | 3408 (37.05) | 2637 (28.67) | 9198 |
| Gender (male:female)† | 1.07 | 1.05 | 1.06 | 1.06 |
| Weight (kg)‡ | 20.89±11.71 | 34.04±11.53 | 50.52±12.05 | 25.08±11.68 |
| Height (cm)‡ | 111.83±16.54 | 137.00±16.39 | 156.4±17.05 | 118.79±16.52 |
| Body mass index (kg/m2)‡ | 16.62±4.35 | 18.10±4.30 | 21.1±4.35 | 18.45±4.34 |
*Number of respondents (proportion in total number).
†Male to female ratio.
‡Mean±SD.