Estimated Prevalence* of Autism Spectrum Disorder among Children Aged 8 Years, by Most Recent Intelligence Quotient Score and by Sex and Race/Ethnicity — Autism and Developmental Disabilities Monitoring Network, Seven Sites,† United States, 2010

Notes: IQ = intelligence quotient; * = Per 1,000 children aged 8 years; † = Includes sites that had intellectual ability data available for ≥70% of children who met the ASD case definition.

Source – Centers for Disease Control and Prevention: Prevalence of Autism Spectrum Disorder Among Children Aged 8 Years – Autism and Developmental Disabilities Monitoring Network, 11 Sites, United States, 2010