Table 1. Frequency and percentage of the subjects for age and gender.
| Age | Females (%) | Males (%) |
|---|---|---|
| 11 | 56 (22) | 46 (19) |
| 12 | 51 (20) | 46 (19) |
| 13 | 47 (18) | 43 (18) |
| 14 | 50 (19) | 56 (23) |
| 15 | 53 (21) | 53 (22) |
| All | 257 (100) | 244 (100) |
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