1 in 36 children identified with autism spectrum disorder (ASD) by age 8 in 2014.
Boys were nearly 4 times as likely to be identified with ASD than girls; 2020 marked the first time the ADDM Network found the percentage of girls identified with ASD to be over 1%.
ASD is common across all ethnic and socioeconomic groups.
Approximately 1/3 of the 8-year-old children with ASD also had an intellectual disability.
The COVID-19 pandemic disrupted early ASD identification among young children, which may have long-lasting effects as a result of delays in identification and initiation of services. The report findings highlight the need for timely and equitable access to early identification and support services.