The CDC has published new autism statistics for adults and the children with ASD, which shows that autism is the most common cause of disability across the spectrum, with up to 3 out of 5 cases diagnosed in adults and 3 out 10 cases diagnosed among children.
The new statistics are based on a national survey conducted in January 2020 and cover all adults with ASD.
The CDC estimates that autism spectrum disorders account for about 0.6% of the population.
The results show that an estimated 3.4 million people are affected by autism spectrum conditions, according to the CDC.
The most common symptom of autism spectrum condition is an inability to communicate, with an estimated 4.6 million adults with autism and 3.7 million children affected.
The CDC found that children with ASDs and those with ASD-II disorders had similar symptoms but were more likely to experience anxiety and social withdrawal.
More than half of all adults and half of those with ASD had at least one social distancing disorder, according the CDC report.
“Autism spectrum disorders are a significant public health challenge,” Dr. Daniel M. Zuk, an assistant professor of medicine and epidemiology at Yale School of Medicine and the lead author of the study, said in a statement.
“The findings highlight the importance of using the latest science to advance our understanding of autism and the challenges that this condition presents.”
The CDC reported that the average age of onset for autism was 14 years for children and 12 years for adults.
That’s more than the age of the next youngest age group, 5 years old, which the CDC defines as those between 4 and 9 years old.
The number of people with ASD diagnosed with another condition increased by almost 3 million in the last year, the CDC said, while the number of adults with ASDS diagnosed with other conditions dropped by nearly 2 million.
According to the report, the highest prevalence of autism was among people ages 20-29.
The report also found that the median age of diagnosis of ASD in adults was 28.6 years for men and 29.3 years for women, and it found that in children between 4 years old and 18 years old the median was 23.5 years.
The age of first reported ASDs in adults rose from 17.5 to 19.3 in 2020.
The number of children with developmental disabilities increased from 2.8 million in 2020 to 3.3 million in 2021.
The majority of adults had an underlying mental health condition at the time of diagnosis, the report said, but the proportion of those diagnosed with developmental delays also increased.
The study is the first to include information on diagnoses and disabilities for adults with and without autism spectrum syndrome, the leading cause of autism worldwide.
It was funded by the National Institutes of Health and was published in the Journal of the American Medical Association.