_____ hyperactivity disorder is diagnosed three times more often in boys than in girls.
It affects about 5â7% of children when diagnosed via the DSM-IV criteria and 1â2% when diagnosed via the ICD-10 criteria. Rates are similar between countries and depend mostly on how it is diagnosed. ADHD is diagnosed approximately three times more often in boys than in girls. About 30â50% of people diagnosed in childhood continue to have symptoms into adulthood and between 2â5% of adults have the condition.