Data+&+Statistics

In the United States
 * The American Psychiatric Association states in the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV-TR) that 3%-7% of school-aged children have ADHD. However, studies have estimated higher rates in community samples.
 * Recent data from surveys of parents indicate that:
 * Approximately 9.5% or 5.4 million children 4-17 years of age have ever been diagnosed with ADHD, as of 2007.
 * The percentage of children with a parent-reported ADHD diagnosis increased by 22% between 2003 and 2007.
 * Rates of ADHD diagnosis increased an average of 3% per year from 1997 to 2006 and an average of 5.5% per year from 2003 to 2007.
 * Boys (13.2%) were more likely than girls (5.6%) to have ever been diagnosed with ADHD.
 * Rates of ADHD diagnosis increased at a greater rate among older teens as compared to younger children.
 * The highest rates of parent-reported ADHD diagnosis were noted among children covered by Medicaid and multiracial children.
 *  Prevalence of parent-reported ADHD diagnosis varied substantially by state, from a low of 5.6% in Nevada to a high of 15.6% in North Carolina.