Navigation Links
COPD rates, higher than expected in China, will continue to grow
Date:10/12/2007

In China, chronic obstructive pulmonary disease (COPD) in people over the age of 40 is much more prevalent than previously thought, according to researchers in Guangdong.

Their findings appear in the second issue for October of the American Journal of Respiratory and Critical care Medicine, published by the American Thoracic Society. The investigators administered spirometric tests and questionnaires to a cross-sectional population in seven provinces/cities in China. Of the more than 20,000 who completed these materials, 8.2% of respondents over 40 met the criteria for having COPD.

Men were more than twice as likely to have COPD as women. But while smoking was, and is, a significant risk factor for COPD in China, only 24% of the females with COPD were smokers, as opposed to nearly 82% of males, suggesting that womens risk might be more strongly associated with the use of biomass fuels, especially for cooking in poorly ventilated areas.

Although China has experienced remarkable modernization over the past two decades, in many rural areas residents continue to use wood, charcoal or coal for fuel, leading to significant biomass exposure, especially in women, who perform most of the cooking duties, wrote Don D. Sin, M.D., and Wan Tan, M.D., of the University of British Columbia in Vancouver, Canada, in an editorial in the same issue of the journal.

To the best of our knowledge, this is the first large-scale, population-based epidemiologic study on COPD prevalence in China, wrote Nanshan Zhong, M.D., of the Guangzhou Institute of Respiratory Diseases at The First Affiliated Hospital in Guangzhou Medical College, and lead researcher.

According to an estimation by the World Health Organization, COPD ranks first among the burdens of diseases in China and accounts for one million deaths and five million disabilities each year.

The researchers selected provinces and cities from a wide range of geographic areas within China, and then selected an urban and a rural area within each province/city. They then used randomized cluster sampling from a randomly selected street or township, and attempted to recruit all individuals older than 40. About 79% of attempted were successfully contacted. They completed questionnaires and underwent spirometric testing for obstructive and restrictive lung disease.

While the overall rate of COPD, as defined by the Global Initiative for Chronic Obstructive Lung Disease (GOLD) was higher than expected, there were some notable differences among the population.

Multivariate logistic regression analyses showed that smoking, pulmonary problems in childhood, family history of respiratory diseases, male sex, low education level, aging, lower body mass index, poor ventilation in the kitchen, and exposure to biomass and occupational dust/gases/fumes are associated with COPD, wrote Dr. Zhong.

Importantly, more than a third of the subjects who had COPD were asymptomatic, and nearly two-thirds had never been diagnosed, suggesting that diagnosis of COPD on symptoms alone is not sufficient.

Even among subjects with GOLD stages 3 and 4 of the disease, fewer than 10% have ever received spirometry, noted Drs. Sin and Tan. The gross underutilization of spirometry represents a Great Wall, a huge barrier to good care for patients with COPD in China.

Dr. Zhong and colleagues findings present a dark picture of COPD in China, which is expected to grow worse before it gets better due to an aging population and rising smoking rates, especially in women.

Our results highlight COPD as a major public health problem in China and call for more research to be directed toward preventative measures and efforts, wrote Dr. Zhong.


'/>"/>
Contact: Keely Savoie
ksavoie@thoracic.org
212-315-8620
American Thoracic Society
Source:Eurekalert

Related medicine news :

1. Feeling depressed? You may be at higher risk of STROKE
2. Higher Rates Of Diabetes Found Among The Poor
3. Higher Risk of Asthma in children with autoimmune disease
4. Lower surgical volume linked to higher death rate
5. Death Risk Higher in Obese Women with Colon Cancer
6. Women who conceive after a year have a higher chance of giving birth prematurely
7. Women who conceive after a year have a higher chance of giving birth prematurely
8. People with skin cancer at higher risk for other types
9. Women With Diabetes Have a Higher Risk of Depression
10. Individuals Born In May At A Higher Risk Of Developing Multiple Sclerosis
11. Higher Statin Dose Safely Reduces Stroke and Cardiac Arrest
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/25/2016)... ... June 25, 2016 , ... Austin residents seeking Mohs surgery services, can now ... and to Dr. Russell Peckham for medical and surgical dermatology. , Dr. Dorsey brings ... The selective fellowship in Mohs Micrographic Surgery completed by Dr. Dorsey was under the ...
(Date:6/25/2016)... ... June 25, 2016 , ... Dr. Calvin Johnson has dedicated ... has implemented orthobiologic procedures as a method for treating his patients. The procedure ... doctors to perform the treatment. Orthobiologics are substances that orthopaedic surgeons use to ...
(Date:6/24/2016)... ... ... June 19, 2016 is World Sickle Cell Observance Day. In an effort to ... treatments, Serenity Recovery Center of Marne, Michigan, has issued a pain management ... (SCD) is a disorder of the red blood cells, which can cause episodes of ...
(Date:6/24/2016)... ... June 24, 2016 , ... Comfort Keepers® of San Diego, CA is excited ... To Recovery® program to drive cancer patients to and from their cancer treatments. ... highest quality of life and ongoing independence. Getting to and from medical treatments ...
(Date:6/24/2016)... ... 24, 2016 , ... Puradigm® & Innovative Solutions today announced ... and processing operations at its production facility, and opened its first two dispensaries ... manufacturer of a complete system of proactive air and surface purification solutions for ...
Breaking Medicine News(10 mins):
(Date:6/24/2016)... -- The Academy of Managed Care Pharmacy (AMCP) today ... allow biopharmaceutical companies to more easily share health care ... coverage decisions, a move that addresses the growing need ... The recommendations address restrictions in the sharing of product ... a prohibition that hinders decision makers from accessing HCEI ...
(Date:6/24/2016)... , June 24, 2016 Research ... World Market for Companion Diagnostic Tests" report to their ... Market for Companion Diagnostics The World Market ... and personalized medicine diagnostics. Market analysis in the report includes ... Test Market (In Vitro Diagnostic Kits) by Region (N. America, ...
(Date:6/24/2016)... Belgium , June 24, 2016 ... today announced the appointment of Dr. Edward ... as a Non-Executive Director, effective June 23, 2016.Dr. ... Compensation and Nominations and Governance Committees.  As a ... will provide independent expertise and strategic counsel to ...
Breaking Medicine Technology: