Results: For 2018, across all 11 ADDM sites, ASD prevalence per 1,000 children aged 8
years ranged from 16.5 in Missouri to 38.9 in California. The overall ASD prevalence was�…

Results: For 2020, across all 11 ADDM sites, ASD prevalence per 1,000 children aged 8
years ranged from 23.1 in Maryland to 44.9 in California. The overall ASD prevalence was�…

Results: For 2016, across all 11 sites, ASD prevalence was 18.5 per 1,000 (one in 54)
children aged 8 years, and ASD was 4.3 times as prevalent among boys as among girls�…

Results: For 2014, the overall prevalence of ASD among the 11 ADDM sites was 16.8 per
1,000 (one in 59) children aged 8 years. Overall ASD prevalence estimates varied among�…

Results: For 2012, the combined estimated prevalence of ASD among the 11 ADDM
Network sites was 14.6 per 1,000 (one in 68) children aged 8 years. Estimated prevalence�…

Results: In 2016, the overall ASD prevalence was 15.6 per 1,000 (one in 64) children aged 4
years for Early ADDM Network sites. Prevalence varied from 8.8 per 1,000 in Missouri to�…

Results: For 2018, the overall ASD prevalence was 17.0 per 1,000 (one in 59) children aged
4 years. Prevalence varied from 9.1 per 1,000 in Utah to 41.6 per 1,000 in California. At�…

Abstract Problem/Condition: Autism spectrum disorder (ASD) is estimated to affect up to 3%
of children in the United States. Public health surveillance for ASD among children aged 4�…

Corresponding author: Jon Baio, National Center on Birth Defects and Developmental
Disabilities, CDC. Problem/Condition: Autism spectrum disorder (ASD). Period Covered�…

Results: For 2020, ASD prevalence among children aged 4 years varied across sites, from
12.7 per 1,000 children in Utah to 46.4 in California. The overall prevalence was 21.5 and�…