Attention deficit/hyperactivity disorder (ADHD) affects up to 7.5 percent of school children, according to this new study. Using a sample of more than 8,500 children from a Minnesota school district, the Mayo Clinic refined previous estimates of ADHD that ranged from 1 to 20 percent of school-aged children. The disorder can affect self-esteem, school performance and personal relationships, and can last into adulthood. Results were published in the March issue of Archives of Pediatrics and Adolescent Medicine. 12 pages. $9. The American Medical Association, Author Reprints, 515 N. State St., Chicago, IL 60610. (312) 464-4594, http://archpedi.ama-assn.org.
