Estimated Autism Risk and Older Reproductive Age

King, Marissa; Fountain, Christine; Dakhlallah, Diana; Bearman, Peter Shawn

The prevalence of autism, a developmental disorder characterized by serious impairments in social interaction and language development as well as stereotyped and repetitive behaviors, has increased dramatically over the past 2 decades from approximately 4 to 40 cases per 10 000. The cause of the increase is unknown, as is the etiology of autism. Evidence from twin studies suggests that autism is likely a genetic disorder. However, genetic causes for the vast majority of autism cases have not yet been identified through molecular genetic research. In addition, dozens of previous studies have identified a wide range of perinatal and parental risk factors. Despite these studies, our understanding of even the most basic of these factors, parental age, is muddled.

Geographic Areas


  • thumnail for Bearman_2009_99916731679.pdf Bearman_2009_99916731679.pdf application/pdf 140 KB Download File

Also Published In

American Journal of Public Health

More About This Work

Academic Units
Interdisciplinary Center for Innovative Theory and Empirics
Published Here
April 24, 2019