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Pillay, Sarosha; Duncan, Madeleine; de Vries, Petrus J. – Autism: The International Journal of Research and Practice, 2021
The prevalence of autism spectrum disorder in South Africa is unknown and, to date, very little research has been performed within school systems that could inform the rates, distribution and profile of needs of children with autism spectrum disorder in education. We performed a comprehensive database search of all children with autism spectrum…
Descriptors: Foreign Countries, Autism, Pervasive Developmental Disorders, Incidence
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Beaudet, Arthur L. – Child Development, 2013
Chromosomal microarray analysis (CMA) has emerged as a powerful new tool to identify genomic abnormalities associated with a wide range of developmental disabilities including congenital malformations, cognitive impairment, and behavioral abnormalities. CMA includes array comparative genomic hybridization (CGH) and single nucleotide polymorphism…
Descriptors: Genetics, Genetic Disorders, Developmental Disabilities, Identification
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Williams, Emma; Thomas, Kate; Sidebotham, Helen; Emond, Alan – Developmental Medicine & Child Neurology, 2008
The aim of this study was to determine the prevalence of autistic spectrum disorder (ASD) within a large representative population sample: the Avon Longitudinal Study of Parents and Children (ALSPAC). Cases of ASD were identified from the clinical notes of children in the ALSPAC with a suspected developmental disorder and from the Pupil Level…
Descriptors: Age, Incidence, Autism, Asperger Syndrome