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. 2019 Apr 12;68(2):1–19. doi: 10.15585/mmwr.ss6802a1

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This figure is a bar chart that compares the prevalence of autism spectrum disorder among children aged 4 and 8 years. In Arizona in 2012, the prevalence among children aged 4 years and 8 years was significantly different (p<0.05 for chi-square test). In Missouri, the prevalence was significantly different in all 3 years. In New Jersey, no differences were significant in any years. — Trends in autism spectrum disorder prevalence* among children aged 4 years and 8 years — Early Autism and Developmental Disabilities Monitoring Network, three sites, United States, 2010, 2012, and 2014

* In Arizona in 2012, the prevalence among children aged 4 years and children aged 8 years was significantly different (p<0.05 for chi-square test). In Missouri, the prevalence was significantly different in all 3 years. (In New Jersey, no differences were significant in any years.)