Mental retardation epidemiology and demographics
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Chelsea Mae Nobleza, M.D.[2] Kiran Singh, M.D. [3]
Overview
Epidemiology and Demographics
The prevalence is 1% in the general population, with 6 per 1000 persons having a severe mental disability. During 2014–2016, the prevalence of children ever diagnosed with any developmental disability significantly increased, from 5.76% in 2014 to 6.99% in 2016 while the prevalence of children ever diagnosed with intellectual disability did not significantly change from 2014 to 2016. [1]
Age
The prevalence of intellectual disability was lower among younger children than older children: 0.73% among children aged 3–7 years, 1.45% among children aged 8–12 years, and 1.40% among children aged 13–17 years. [2]
Race
- There is no racial predilection to [disease name].
- [Disease name] usually affects individuals of the [race 1] race. [Race 2] individuals are less likely to develop [disease name].
Gender
- [Disease name] affects men and women equally.
- [Gender 1] are more commonly affected by [disease name] than [gender 2]. The [gender 1] to [gender 2] ratio is approximately [number > 1] to 1.
Region
- The majority of [disease name] cases are reported in [geographical region].
- [Disease name] is a common/rare disease that tends to affect [patient population 1] and [patient population 2].