Autism and Developmental Disabilities Monitoring Network
The Autism and Developmental Disabilities Monitoring Network (ADDM) is a group of programs funded by CDC to determine the number of people with autism spectrum disorders (ASDs) in the United States. The Network's goal is to provide comparable, population-based estimates of the prevalence rates of ASD in different sites over time. The Network data can provide a population-based description of the characteristics of ASDs; determine differences in ASD prevalence among different population groups and/or geographic regions; and monitor trends in ASD prevalence.
The ADDM sites all collect data using the same surveillance methods, which are modeled after CDC’s Metropolitan Atlanta Developmental Disabilities Surveillance Program (MADDSP). Currently, 14 sites (states) participate in the network.
https://www.cdc.gov/ncbddd/autism/addm.html and related web pages.