| All subjects | Boys | Girls | ♂ vs♀a |
---|---|---|---|---|
Total number of Children | 505 | 258 | 247 | Â |
Age (years) | 7.9 ± 2.1 | 7.8 ± 2.1 | 8.0 ± 2.1 | P > .05 |
   (Range) | (4-11) | (4-11) | (4-11) |  |
Dominant side | Â | Â | Â | Â |
   Right | 480 | 240 | 240 | P > .05 |
   Left | 25 | 18 | 7 |  |
Children attended extra-sports | 80 | 51 | 29 | P > .05 |
Age group: | Â | Â | Â | P > .05 |
   4 years | 33 | 17 | 16 |  |
   5 years | 59 | 35 | 24 |  |
   6 years | 45 | 27 | 18 |  |
   7 years | 71 | 33 | 38 |  |
   8 years | 75 | 36 | 39 |  |
   9 years | 88 | 47 | 41 |  |
   10 years | 77 | 39 | 38 |  |
   11 years | 57 | 24 | 33 |  |