Featured Research

from universities, journals, and other organizations

Mayo Clinic Study Examines Frequency Of Attention-Deficit/hyperactivity Disorder (AD/HD)

Date:
March 20, 2002
Source:
Mayo Clinic
Summary:
A new Mayo Clinic study shows that attention-deficit/hyperactivity disorder (AD/HD) affects up to 7.5 percent of school-age children. Previous studies had estimated the occurrence of AD/HD to be anywhere between one and 20 percent of school-age children. The Mayo Clinic report, published in the March issue of Archives of Pediatrics and Adolescent Medicine, addresses the confusion about the number of children affected by AD/HD.

ROCHESTER, MINN. -- A new Mayo Clinic study shows that attention-deficit/hyperactivity disorder (AD/HD) affects up to 7.5 percent of school-age children. Previous studies had estimated the occurrence of AD/HD to be anywhere between one and 20 percent of school-age children. The Mayo Clinic report, published in the March issue of Archives of Pediatrics and Adolescent Medicine, addresses the confusion about the number of children affected by AD/HD.

Related Articles


The study found that the lowest and most conservative estimate of AD/HD occurrence among the study subjects was 7.5 percent by age 19, based on research criteria for AD/HD. These criteria required both a clinical diagnosis of AD/HD and supporting documentation in the medical and school records.

"The 7.5 percent incidence of AD/HD from the current study includes subjects who met the most stringent research criteria and are likely to represent cases that most clinicians would regard as true cases of AD/HD," says William Barbaresi, M.D., a Mayo Clinic developmental and behavioral pediatric specialist and lead author of the study. "This study represents what we believe to be the largest population-based study of the occurrence (incidence) of AD/HD to date."

The AD/HD cases in the Mayo study were identified on the basis of rigorous research criteria, including a clinical diagnosis and extensive supporting documentation. Researchers also obtained comprehensive information about study subjects from both medical and school records.

A number of previous studies of the incidence of AD/HD relied on limited sources of information to establish the diagnosis. For example, some included only a single teacher questionnaire or lay-administered diagnostic interview.

"We took a hard look at this condition from a number of angles to help pinpoint the occurrence rates," says Dr. Barbaresi. "The results from this study provide much needed baseline information for comparison with populations in other communities. We believe this information will help us to determine how many children in the United States have AD/HD, and therefore, how many should be expected to receive treatment for this condition."

The study subjects included a total of 8,548 children born between Jan. 1, 1976, and Dec. 31, 1982, to mothers residing in the five Olmsted County, Minn., townships comprising Minnesota Independent School District #535.

AD/HD is a chronic disorder that begins in childhood and sometimes lasts into adult life. In general, children and adults with AD/HD have a difficult time paying attention and concentrating (inattention), sitting still (hyperactivity) and controlling impulsive behavior (impulsivity). These problems can affect nearly every aspect of life. Children and adults with AD/HD often struggle with low self-esteem, troubled personal relationships and poor performance in school or at work.

The study was supported by research grants from National Institutes of Health and Mayo Foundation.


Story Source:

The above story is based on materials provided by Mayo Clinic. Note: Materials may be edited for content and length.


Cite This Page:

Mayo Clinic. "Mayo Clinic Study Examines Frequency Of Attention-Deficit/hyperactivity Disorder (AD/HD)." ScienceDaily. ScienceDaily, 20 March 2002. <www.sciencedaily.com/releases/2002/03/020314080350.htm>.
Mayo Clinic. (2002, March 20). Mayo Clinic Study Examines Frequency Of Attention-Deficit/hyperactivity Disorder (AD/HD). ScienceDaily. Retrieved October 30, 2014 from www.sciencedaily.com/releases/2002/03/020314080350.htm
Mayo Clinic. "Mayo Clinic Study Examines Frequency Of Attention-Deficit/hyperactivity Disorder (AD/HD)." ScienceDaily. www.sciencedaily.com/releases/2002/03/020314080350.htm (accessed October 30, 2014).

Share This



More Health & Medicine News

Thursday, October 30, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Fauci Says Ebola Risk in US "essentially Zero"

Fauci Says Ebola Risk in US "essentially Zero"

AP (Oct. 30, 2014) NIAID Director Anthony Fauci said the risk of Ebola becoming an epidemic in the U.S. is essentially zero Thursday at the Washington Ideas Forum. He also said an Ebola vaccine will be tested in West Africa in the next few months. (Oct. 30) Video provided by AP
Powered by NewsLook.com
Nurse Defies Ebola Quarantine With Bike Ride

Nurse Defies Ebola Quarantine With Bike Ride

AP (Oct. 30, 2014) A nurse who vowed to defy Maine's voluntary quarantine for health care workers who treated Ebola patients followed through on her promise Thursday, leaving her home for an hour-long bike ride. (Oct. 30) Video provided by AP
Powered by NewsLook.com
Pot-Infused Edibles Raise Concerns in Colorado

Pot-Infused Edibles Raise Concerns in Colorado

AFP (Oct. 30, 2014) Colorado may have legalized marijuana for recreational use, but the debate around the decision still continues, with a recent - failed - attempt to ban cannabis-infused edibles. Duration: 01:53 Video provided by AFP
Powered by NewsLook.com
British Navy Ship Arrives in Sierra Leone With Ebola Aid

British Navy Ship Arrives in Sierra Leone With Ebola Aid

AFP (Oct. 30, 2014) The British ship RFA ARGUS arrived in Sierra Leone to deliver supplies and equipment to help the fight against Ebola. Duration: 00:42 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins