Table 2 Prevalence rates of impairments by age and gender
Impairments of development | Age | Gender | ||
|---|---|---|---|---|
under 6 years N = 3,084 % (m = 83) | 6 years and older N = 3,146 % (m = 109) | Girl N = 2,984 % (m = 93) | Boy N = 3,246 % (m = 99) | |
gross motor skills | 7.6 | 4.3 | 3.2 | 8.3 |
fine motor coordination | 9.0 | 4.5 | 3.2 | 9.8 |
grapho-motor coordination | 5.4 | 3.4 | 2.1 | 6.2 |
pronunciation | 11.5 | 11.3 | 7.2 | 15.1 |
grammar | 3.2 | 2.7 | 1.7 | 4.0 |
rhythm of speech | 3.5 | 3.1 | 1.9 | 4.5 |
memory and concentration | 12.3 | 5.2 | 6.4 | 10.4 |
perseverance | 8.0 | 2.6 | 4.2 | 6.0 |
abstraction | 4.9 | 2.6 | 2.4 | 4.9 |
visual perception | 6.0 | 3.9 | 2.9 | 6.7 |
arithmetic | 4.5 | 2.7 | 2.8 | 4.2 |
psychosocial development | 8.4 | 3.7 | 4.7 | 7.0 |