Table 1

Prevalence of chronic neurological diseases in people aged 10 to 24 years per 1000 population (US figures)10

Cerebral palsy1.2
Epilepsy5.1
Hearing impairment26.6
Visual impairment18.7
Paralysis of extremities (partial or total)1.8
Spina bifida0.2
Moderate and severe learning difficulties13.0