A recent analysis indicates that the proportion of children having a history of attention-deficit/hyperactivity disorder (ADHD) increased by 42% in less than a decade.
Centers for Disease Control and Prevention
Investigators used data from the National Survey of Children’s Health, a random-digit-dialed telephone survey, to compare the differences between 2003 and 2011 in how many parents say a health professional had ever diagnosed their child with ADHD. Results, published in the Journal of the American Academy of Child and Adolescent Psychiatry, showed that in 2003, 7.8% of children and teens aged 4 to 17 years had ever been diagnosed with ADHD. The figure increased by 22%, to 9.5%, in 2007 and by another 16%, to 11%, in 2011. The 2011 prevalence rate represented more than 6.4 million children and teens nationally.