Journal of Autism and Developmental Disorders

, Volume 37, Issue 4, pp 667–677 | Cite as

Sociodemographic Risk Factors for Autism in a US Metropolitan Area

  • Tanya Karapurkar Bhasin
  • Diana Schendel
Original Paper


The present study examined the association between autism and sociodemographic factors, overall and in subgroups of children with autism with and without mental retardation (Autism/MR and Autism/No MR, respectively); the association was further examined in subanalyses by child’s source of ascertainment to assess the presence of ascertainment bias. In the main analyses, one marker of higher social class (higher median family income) was significantly associated with autism overall. Both markers of higher social class (higher maternal education and higher median family income) were significantly associated with autism/no MR, but not associated with autism/MR. In the subanalyses, associations with social class varied by ascertainment source. Future studies should consider phenotypic subgroups of children with autism and must consider potential ascertainment bias.


Autism ASD Epidemiologic methods Risk factors 


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Copyright information

© Springer Science+Business Media, Inc. 2006

Authors and Affiliations

  1. 1.Centers for Disease Control and PreventionNational Center on Birth Defects and Developmental Disabilities, AtlantaGeorgiaUSA

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