MedicalResearch.com Interview with:
Meghan Miller, Ph.D.
Department of Psychiatry & Behavioral Sciences
UC Davis MIND Institute
Sacramento, CA 95817
MedicalResearch.com: What is the background for this study? What are the main findings?
Response: This study evaluated within-diagnosis sibling recurrence and sibling cross-aggregation of ADHD and autism spectrum disorder among later-born siblings of diagnosed children. We specifically chose to include only families who had at least one subsequent child after the diagnosis of an older child because failing to do so could bias recurrence risk estimates.
We found that, compared to later-born siblings of non-diagnosed children, later-born siblings of children with autism were more likely to be diagnosed with autism or with ADHD. Likewise, compared to later-born siblings of non-diagnosed children, later-born siblings of children with ADHD were more likely to be diagnosed with ADHD or with autism.