Autism Risk Accelerates with Age in Mothers Over 30 (image) Drexel University Share Print E-Mail Caption Autism risk grows steadily with fathers' increasing age, but accelerates with mothers' age after 30. These charts show generalized additive model estimates of the probability of autism spectrum disorders in the Stockholm Youth Cohort by maternal and paternal age. Dashed lines show 95 percent confidence intervals. Credit Drexel University, adapted from Idring et al., International Journal of Epidemiology Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.