Abstract
Prevalence of Autism Spectrum Disorder Among Children Aged 8 Years - Autism and Developmental Disabilities Monitoring Network, 11 Sites, United States, 2014.
Highlights
Autism spectrum disorder (ASD) is a developmental disability defined by diagnostic criteria that include deficits in social communication and social interaction, and the presence of restricted, repetitive patterns of behavior, interests, or activities that can persist throughout life [1]
Among the nine sites with sufficient data on intellectual ability, 31% of children with ASD were classified in the range of intellectual disability, 25% were in the borderline range (IQ 71–85), and 44% had intelligence quotient (IQ) scores in the average to above average range (i.e., IQ >85)
ASD prevalence estimates based on the new DSM-5 case definition were very similar in magnitude but slightly lower than those based on the historical DSM-IV-TR case definition
Summary
Autism spectrum disorder (ASD) is a developmental disability defined by diagnostic criteria that include deficits in social communication and social interaction, and the presence of restricted, repetitive patterns of behavior, interests, or activities that can persist throughout life [1]. The first CDC study, which was based on an investigation in Brick Township, New Jersey [2], identified similar characteristics but higher prevalence of ASD compared with other studies of that era. The second CDC study, which was conducted in metropolitan Atlanta, Georgia [3], identified a lower prevalence of ASD compared with the Brick Township study but similar estimates compared with other prevalence studies of that era. Features of ASD might overlap with or be difficult to distinguish from those of other psychiatric disorders, as described extensively in DSM-5
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