Recurrence of Autism Spectrum Disorders in Full- and Half-Siblings and Trends Over Time

Published August 22, 2013 in JAMA Pediatrics

Children who have an older sibling with autism are seven times more likely than other kids to be diagnosed with autism themselves, according to a new study from Denmark. A higher-than-average risk was also detected for children who have a half-sibling with ASD, especially if the two children had the same mother.

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