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The participants’ demographic characteristics (n = 475).
| Characteristic | Value |
|---|---|
| Gender (% boys) | 58.2 |
| Age (years, mean (SD)) | 14.6(1.0) |
| Weight (kg, mean (SD)) | 56.4(14.1) |
| Height (cm, mean (SD)) | 160.6(8.4) |
| BMI (kg/m2, mean (SD)) | 21.7(4.4) |
| Underweight (%) | 3.2 |
| Normal weight (%) | 53.5 |
| Overweight (%) | 14.8 |
| Obese (%) | 8 |
| Grade (%) | |
| 7 | 16.5 |
| 8 | 28.4 |
| 9 | 30 |
| 10 | 25.1 |
| Location (%) | |
| Rural | 57.7 |
| Urban | 42.3 |
| Smoking Status (%) | |
| Never smoked | 34.7 |
| Cigarette smokers | 9.3 |
| Waterpipe smokers | 19.6 |
| Dual smokers | 36.4 |
