MedicalResearch.com Interview with: Rebecca H. Bitsko, PhD, National Center on Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention...In this study, we show that more than 1 in 20, or 2.6 million, US children aged 6-17 had a current diagnosis of anxiety or depression, by parent report, in 2011-12. We also found an increase of diagnosed anxiety in these children from 1 in 28 in 2007 to 1 in 24 in 2011-12.