The average age of the children was 17.2 years, group of 17 - 19 years accounted for 82%; Female accounted 55%, male accounted 45%; 50% of them were pupils.
- Tuổi trung bình: 17,2, nhóm tuổi 17 - 19 tuổi chiếm 82%; nữ 55%, nam 45%, 50% là học sinh.