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Characteristics of study population in 2010 and 2014.
| Age (Year) | Total | |||
|---|---|---|---|---|
| 7–12 | 13–15 | 16–18 | ||
| 2010 | ||||
| Boys | 2296 | 1793 | 1725 | 5814 |
| Girls | 2165 | 1783 | 1766 | 5714 |
| Total | 4461 | 3576 | 3491 | 11,528 |
| 2014 | ||||
| Boys | 2562 | 1807 | 1647 | 6016 |
| Girls | 2564 | 1766 | 1728 | 6058 |
| Total | 5126 | 3573 | 3375 | 12,074 |
