Featured Research

from universities, journals, and other organizations

Asthma Over-Diagnosed In One Third Of Canadian Adults, Study Suggests

Date:
November 29, 2008
Source:
Canadian Medical Association Journal
Summary:
Asthma may be overdiagnosed in countries like Canada, suggests a longitudinal study of 540 obese and non-obese adults that found approximately one third of Canadians with physician-diagnosed asthma do not have asthma when objectively tested.

Asthma may be overdiagnosed in countries like Canada, suggests a longitudinal study of 540obese and non-obese adults that found approximately one third of Canadians with physician-diagnosed asthma do not have asthma when objectively tested.

Asthma rates have increased in Canada and the US by 75% between 1980and 1994, and studies suggest a possible link between obesity and asthma. In North America, obese adults are twice as likely to be diagnosed with asthma by a physician as non-obese adults.

However, the “study found that 30% of adults recruited from the community who had been diagnosed with asthma by a physician had no evidence of asthma when their medications were tapered and when there were evaluated with serial assessments of symptoms, lung function and bronchial provocation tests,” state Dr. Shawn Aaron from the Ottawa Health Research Institute and coauthors. “Overdiagnosis, or misdiagnosis, of asthma in Canada seems to be very common, but obese adults are not more likely to be overdiagnosed compared to normal weight adults.”

Potential participants for the study were recruited by random telephone digit dialling from 8Canadian cities and nearby rural areas from British Columbia to Nova Scotia, comprising a sample representative of the national population.

The researchers write that this overdiagnosis of asthma is concerning and suggest that physicians use spirometry, which measures the rate and volume of airflow through the lungs, for objective testing before labelling respiratory symptoms.

A related editorial by Dr. Matthew Stanbrook and Dr. Alan Kaplan and the CMAJ editorial team caution that asthma may be misdiagnosed rather than overdiagnosed. Symptoms attributed to asthma may signify other underlying medical conditions. They agree that all suspected cases of asthma must be diagnosed with spirometry and this should be available in all practice settings.


Story Source:

The above story is based on materials provided by Canadian Medical Association Journal. Note: Materials may be edited for content and length.


Cite This Page:

Canadian Medical Association Journal. "Asthma Over-Diagnosed In One Third Of Canadian Adults, Study Suggests." ScienceDaily. ScienceDaily, 29 November 2008. <www.sciencedaily.com/releases/2008/11/081117192754.htm>.
Canadian Medical Association Journal. (2008, November 29). Asthma Over-Diagnosed In One Third Of Canadian Adults, Study Suggests. ScienceDaily. Retrieved April 16, 2014 from www.sciencedaily.com/releases/2008/11/081117192754.htm
Canadian Medical Association Journal. "Asthma Over-Diagnosed In One Third Of Canadian Adults, Study Suggests." ScienceDaily. www.sciencedaily.com/releases/2008/11/081117192754.htm (accessed April 16, 2014).

Share This



More Health & Medicine News

Wednesday, April 16, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Ebola Outbreak Now Linked To 121 Deaths

Ebola Outbreak Now Linked To 121 Deaths

Newsy (Apr. 15, 2014) The ebola virus outbreak in West Africa is now linked to 121 deaths. Health officials fear the virus will continue to spread in urban areas. Video provided by Newsy
Powered by NewsLook.com
Cognitive Function: Is It All Downhill From Age 24?

Cognitive Function: Is It All Downhill From Age 24?

Newsy (Apr. 15, 2014) A new study out of Canada says cognitive motor performance begins deteriorating around age 24. Video provided by Newsy
Powered by NewsLook.com
How Mt. Everest Helped Scientists Research Diabetes

How Mt. Everest Helped Scientists Research Diabetes

Newsy (Apr. 15, 2014) British researchers were able to use Mount Everest's low altitudes to study insulin resistance. They hope to find ways to treat diabetes. Video provided by Newsy
Powered by NewsLook.com
Carpenter's Injury Leads To Hundreds Of 3-D-Printed Hands

Carpenter's Injury Leads To Hundreds Of 3-D-Printed Hands

Newsy (Apr. 14, 2014) Richard van As lost all fingers on his right hand in a woodworking accident. Now, he's used the incident to create a prosthetic to help hundreds. Video provided by Newsy
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:
from the past week

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