About 1% of U.S. 8-Year-Olds Have Autism Spectrum Disorders

Approximately 1% of 8-year-old children in the United States meet criteria for an autism spectrum disorder, based on results of a nationwide study of 8-year-olds conducted in 2006. The findings were published in a surveillance summary as part of the Centers for Disease Control and Prevention's Morbidity and Mortality Weekly Report.