ADHD Statistics


  • ADHD affects 2-5% of all children.
  • ADHD was first described about 100 years ago but is no more prevalent now, just better recognized.
  • Although up to 3x as many boys are diagnosed with ADHD as girls, it is now suspected the incidence is more like 1:1.
  •  Research suggests 50-80% of children with ADHD will continue to meet diagnostic criteria in adolescence and 50-70% will have symptoms causing impairment as adults.
  • The incidence of ADHD is approximately the same across all countries and races.
  • Most ADHD children have the social and emotional maturity of a child two thirds their age.
  • The stimulants Ritalin and Dexamphetamine have been used for over 40 years.  Between 80-90% of children with significant ADHD will be helped in the short term by one of the stimulants.
  • Approximately half of the children who present with ADHD are also troubled by specific learning disabilities, eg dyslexia.
  • Oppositional Defiant Disorder is a co-morbid condition found in 40-60% of children with ADHD.

Ref: Understanding ADHD by Dr Christopher Green and Dr Kit Chee, 2001

Fact Sheet: Attention Deficit Hyperactivity Disorder (ADHD) Topic,

There is so much more information available on ADHD, but do be wary of the misconceptions out there. The ADHD Association is happy to assist with more information or check out our recommended Links.