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Characteristics of participants (n = 1852).
| Characteristics | Mean ± SD | Median | Range |
|---|---|---|---|
| Age, years | 6.82 ± 0.46 | 6.78 | 6–10 |
| Gender, male, n (%) | 981 (52.97%) | ||
| Ethnic categories, n (%) | |||
| Tibetan | 1758 (94.92%) | ||
| Han | 85 (4.59%) | ||
| Others | 9 (0.49%) | ||
| Height, cm | 120.55 ± 5.52 | 120.00 | 103.00–168.00 |
| Weight (kg) | 22.96 ± 3.69 | 22.00 | 12.00–45.00 |
| BMI (kg/m2) | 15.74 ± 1.80 | 15.45 | 9.23–27.47 |
