Posted March 27, 2020
The United States uses a variety of imperfect data sources to monitor autism spectrum disorder (ASD) at the national level—each providing a partial snapshot of trends for various age groups and time periods. However, many autism researchers consider the high-quality, state-level data collected by the California Department of Developmental Services (DDS) to be the “most reliable long-term record of autism prevalence trends in the United States” for cases on the more severe end of the spectrum. Read more.