While research has suggested that the prevalence of autism spectrum disorders in American children was about 1 of every 150 children, a new government study estimates that the prevalence is more likely about 1 in every 91 children.
The researchers culled data for the study from the 2007 National Survey of Children's Health, which included more than 78,000 children from across the country, all between 3 and 17 years old.
