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The analyses of risk factors for COPD in the Li ethnic group in Hainan, People’s Republic of China

Overview of attention for article published in International Journal of Chronic Obstructive Pulmonary Disease, November 2015
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Title
The analyses of risk factors for COPD in the Li ethnic group in Hainan, People’s Republic of China
Published in
International Journal of Chronic Obstructive Pulmonary Disease, November 2015
DOI 10.2147/copd.s86402
Pubmed ID
Authors

Yipeng Ding, Junxu Xu, Jinjian Yao, Yu Chen, Ping He, Yanhong Ouyang, Huan Niu, Zhongjie Tian, Pei Sun

Abstract

To study the risk factors for chronic obstructive pulmonary disease (COPD) in Li population in Hainan province, People's Republic of China. Li people above 40 years of age from Hainan were chosen by stratified random cluster sampling between 2012 and 2014. All participants were interviewed with a home-visiting questionnaire, and spirometry was performed on all eligible participants. Patients with airflow limitation (forced expiratory volume in 1 second [FEV1]/forced vital capacity [FVC] <0.70) were further examined by postbronchodilator spirometry, and those with a postbronchodilator FEV1/FVC <0.70 was diagnosed with COPD. The information of physical condition and history, smoking intensity, smoking duration, second-hand smoking, education, job category, monthly household income, working years, residential environment, primary fuel for cooking and heating (biomass fuel including wood, crop residues, dung, and charcoal, or modern fuel such as natural gas, liquefied petroleum gas, electricity, and solar energy), ventilated kitchen, heating methods, air pollution, recurrent respiratory infections, family history of respiratory diseases, cough incentives, and allergies of COPD and non-COPD subjects was analyzed by univariate and multivariate logistic regression models to identify correlated risk factors for COPD. Out of the 5,463 Li participants, a total of 277 COPD cases were identified by spirometry, and 307 healthy subjects were randomly selected as controls. Univariate logistic regression analyses showed that older people (65 years and above), low body mass index (BMI), biomass smoke, 11-20 and >20 cigarettes/day, smoking for 40 years or more, second-hand smoking, recurrent respiratory infections, and induced cough were risk factors for COPD, whereas high BMI, high education level, and presence of ventilated kitchen were protective factors. Subsequent multivariate logistic regression model further demonstrated that aging, low BMI, biomass smoke, >20 cigarettes/day, and recurrent respiratory tract infections were high-risk factors for COPD in the Li population. The incidence of COPD has a strong correlation with age, BMI, biomass smoke, >20 cigarettes/day, and recurrent respiratory infections, suggesting they were high-risk factors for COPD in Li population.

Twitter Demographics

The data shown below were collected from the profile of 1 tweeter who shared this research output. Click here to find out more about how the information was compiled.

Mendeley readers

The data shown below were compiled from readership statistics for 95 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Romania 1 1%
Unknown 94 99%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 16 17%
Student > Bachelor 15 16%
Student > Master 14 15%
Researcher 11 12%
Student > Doctoral Student 6 6%
Other 14 15%
Unknown 19 20%
Readers by discipline Count As %
Medicine and Dentistry 29 31%
Nursing and Health Professions 15 16%
Environmental Science 6 6%
Social Sciences 3 3%
Engineering 3 3%
Other 13 14%
Unknown 26 27%

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 01 December 2015.
All research outputs
#4,907,232
of 6,632,903 outputs
Outputs from International Journal of Chronic Obstructive Pulmonary Disease
#600
of 819 outputs
Outputs of similar age
#171,933
of 252,576 outputs
Outputs of similar age from International Journal of Chronic Obstructive Pulmonary Disease
#48
of 59 outputs
Altmetric has tracked 6,632,903 research outputs across all sources so far. This one is in the 14th percentile – i.e., 14% of other outputs scored the same or lower than it.
So far Altmetric has tracked 819 research outputs from this source. They receive a mean Attention Score of 3.5. This one is in the 7th percentile – i.e., 7% of its peers scored the same or lower than it.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 252,576 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 20th percentile – i.e., 20% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 59 others from the same source and published within six weeks on either side of this one. This one is in the 3rd percentile – i.e., 3% of its contemporaries scored the same or lower than it.