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Yanan Zhao; Feng Lu; Ruoxi Ding; Dawei Zhu; Rong Zhang; Siwei Sun; Ping He; Xiaoying Zheng – Autism: The International Journal of Research and Practice, 2025
The prevalence of autism spectrum disorder in the world has increased over the last decade, but the prevalence, incidence, and characteristics of autism spectrum disorder in China were not well understood. Using administrative data, we aimed to estimate the prevalence and incidence of autism spectrum disorder and describe the co-occurring…
Descriptors: Incidence, Autism Spectrum Disorders, Symptoms (Individual Disorders), Foreign Countries
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Saemundsen, Evald; Juliusson, H.; Hjaltested, S.; Gunnarsdottir, T.; Halldorsdottir, T.; Hreidarsson, S.; Magnusson, P. – Journal of Intellectual Disability Research, 2010
Background: Research on the prevalence of autism in Iceland has indicated that one possible explanation of fewer autism cases in older age groups was due to an underestimation of autism in individuals with intellectual disabilities (IDs). The present study systematically searched for autism cases in the adult population of individuals with severe…
Descriptors: Incidence, Mental Retardation, Autism, Rating Scales