Autism massive increase
Autism Spectrum Disorder
ADDM Network, 2000-2020: Combining data from all sites, (8 year olds)
2000 1 in 150
2002 1 in 150
2004 1 in 125
2006 1 in 110
2008 1 in 88
2010 1 in 68
2012 1 in 69
2014 1 in 59
2016 1 in 54
2018 1 in 44
2020 1 in 36
2020 data, 11 sites
(Arizona, Arkansas, California, Georgia, Maryland, Minnesota, Missouri, New Jersey, Tennessee, Utah, and Wisconsin)
ASD in 8-year-olds
Prevalence per 1,000 was 27.6 (one in 36)
23.1 in Maryland
44.9 in California
Male-to-female prevalence ratio, 3.8
(43.0 among boys and 11.4 among girls).
For the first time, overall ASD prevalence for girls more than 1%
ASD is reported to occur in all racial, ethnic, and socioeconomic groups.
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