(CNN)
A survey of parents across the United States estimates that one in 40 children has autism spectrum disorder, according to a study published Monday in the journal Pediatrics.
In other words, the condition was reported in 2.5% of children, representing an estimated 1.5 million kids ages 3 to 17.
A report released this year by the US Centers for Disease Control and Prevention estimated the prevalence at one in 59 children or about 1.7%, based on 2014 data. Read more