The bulk of the increase in autism prevalence the United States between 2000 and 2012 can be attributed to children on the mild end of the spectrum.
The findings come from prevalence data gathered by the Autism and Developmental Disabilities Monitoring Network (ADDM) of the U.S. Centers for Disease Control and Prevention (CDC). Researchers presented the unpublished results today at the 2018 International Society for Autism Research annual meeting in Rotterdam, the Netherlands.