Is attention deficit hyperactivity disorder (ADHD) more common in in boys or in girls?

Updated: Sep 09, 2021
  • Author: Maggie A Wilkes, MD; Chief Editor: Caroly Pataki, MD  more...
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ADHD (ADD) is more frequently diagnosed in boys than in girls. Most estimates of the male-to-female ratio range between 3:1 and 4:1 in clinic populations. However, many community-based samples produce a ratio of 2:1. Recognition of ADHD (ADD) has improved over the last decade, and the male-to-female ratio has been decreasing; this may be the result of the increased recognition of inattentive ADHD (ADD).

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