Navigation Links
COPD rates, higher than expected in China, will continue to grow

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
American Thoracic Society

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:
(Date:11/28/2015)... ... , ... Pixel Film Studios is back again with ProPanel: Pulse . ... endless. Users have full control over angle of view, speed method, start point, end ... to get heads to turn. , ProPanel: Pulse offers fully customizable pulsating shape masks, ...
(Date:11/27/2015)... ... , ... The rapid speed at which Americans are aging ... is needed, especially with Alzheimer’s, dementia and other cognitive conditions becoming more prevalent. ... part of this equation: 80 percent of medical care occurs in the home, ...
(Date:11/27/2015)... ... November 27, 2015 , ... The print ... USA Today in Atlanta, Dallas, New York, Minneapolis, South Florida, with a circulation ... is distributed nationally, through a vast social media strategy and across a network ...
(Date:11/27/2015)... ... November 27, 2015 , ... A simply groundbreaking television series, "Voices ... show that delves into an array of issues that are presently affecting Americans. Dedicated ... open dialogue, this show is changing the subjects consumers focus on, one episode at ...
(Date:11/27/2015)... ... November 27, 2015 , ... Dr. Thomas Dunlap ... Inc. and Dr. Tucker Bierbaum with Emergency Medicine at St., Joseph Health ... both STEMI and Sepsis conditions present in similar ways and require time-critical intervention to ...
Breaking Medicine News(10 mins):
(Date:11/26/2015)... 2015 ... the  "2016 Future Horizons and Growth ... Marker Testing Market: Supplier Shares, Competitive ... offering.  --> ) ... "2016 Future Horizons and Growth Strategies ...
(Date:11/25/2015)... 25, 2015  The American Academy of Pediatrics ... and the March of Dimes cheered today,s signature ... Infants Act of 2015 (S.799), which takes ... born exposed to drugs, such as opioids, and ... all three organizations have worked together leading advocacy ...
(Date:11/25/2015)... -- ARKRAY USA , Inc., a leader ... the accuracy of its blood glucose meter systems. Last ... and Cardiovascular Disease in Los Angeles ... 01 meter and the Assure ® Prism ... accurately measure glucose levels in blood is essential for ...
Breaking Medicine Technology: