Between 1997 and 2016, the prevalence of attention-deficit/hyperactivity disorder (ADHD) in children and adolescents increased from 6.1% to 10.2% in the U.S. This increase was mostly consistent over this time, except for a slight overall decrease (9.6% to 9.4%) between the 2011-2012 and 2013-2014 timeframes.
These findings were reported in "Twenty-Year Trends in Diagnosed Attention-Deficit/Hyperactivity Disorder Among US Children and Adolescents, 1997-2016" by Guifeng Xu, M.D.; Lane Strathearn, M.B.B.S., F.R.A.C.P., Ph.D.; Buyun Liu, M.D., Ph.D.; Binrang . . .