7% of Children Worldwide Have ADHD.
Data from 175 published studies conducted over four decades indicates that about 7% of kids worldwide have attention deficit/hyperactivity disorder (ADHD). Children with ADHD tend to be inattentive, impulsive, and hyperactive and this disorder can cause them to struggle both academically and socially. These findings may help health officials determine if ADHD is over or under diagnosed in their country, state, or community.
Pediatrics, April 2015