Researchers estimated that the prevalence of autism spectrum disorder, or ASD, among children and adolescents in the United States was 3.14% in 2019 and 2020 overall, up from 2.24% in 2014.
In a research letter published in JAMA Pediatrics, they noted several studies showing that the rate of U.S. children with ASD diagnoses has increased. A 2020 report indicated that one in 54 children aged 8 years received a diagnosis, and last December the estimate in that same age group jumped to one in 44.
Using data from the 2019 and 2020 editions of the National Health Interview Survey (NHIS), the authors