How does the prevalence of attention deficit/hyperactivity disorder (ADHD) vary between females or males?

Updated: Oct 01, 2019
  • Author: Stephen Soreff, MD; Chief Editor: Glen L Xiong, MD  more...
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In children, ADHD is 3–5 times more common in boys than in girls. Some studies report an incidence ratio of as high as 5:1. The predominantly inattentive type of ADHD is found more commonly in girls than in boys.

In adults, the sex ratio is closer to even.

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