Developmental regression in children with an autism spectrum disorder identified by a population-based surveillance system

This study evaluated the phenomenon of autistic regression using population-based data. The sample comprised 285 children who met the autism spectrum disorder (ASD) case definition within an ongoing surveillance program. Results indicated that children with a previously documented ASD diagnosis had higher rates of autistic regression than children who met the ASD surveillance definition but did not have a clearly documented ASD diagnosis in their records (17—26 percent of surveillance cases).

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Developmental regression in children with an autism spectrum disorder identified by a population-based surveillance system

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