Table 2.
Study population characteristics
| n | % | |
| Boys | 3,919 | 57.8 |
| Girls | 2,857 | 42.2 |
| Total | 6,776 | 100.0 |
| Median Age | 6.0 | |
| Mean Age | 7.6 | |
| S.D | 4.0 | |
| Range | 3–17 | |
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