The prevalence of intellectual disability has remained stable over the years. It is noted that it occurs more in males and there is no racial predilection when it comes to the prevalence of this condition.
Mental retardation epidemiology and demographics
Asperger syndrome epidemiology and demographics
Hearing impairment epidemiology and demographics
Attention-deficit hyperactivity disorder epidemiology and demographics
Autism epidemiology
Down syndrome epidemiology and demographics
Attention-deficit hyperactivity disorder classification
Fragile X syndrome epidemiology and demographics