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Risk of acute exacerbations in chronic obstructive pulmonary disease associated with biomass smoke compared with tobacco smoke

Cited 1 time in Web of Science Cited 2 time in Scopus
Authors
Cho, Jaeyoung; Lee, Chang-Hoon; Hwang, Seung-sik; Kim, Ki Uk; Lee, Sang Haak; Park, Hye Yun; Park, Seoung Ju; Min, Kyung Hoon; Oh, Yeon-Mok; Yoo, Kwang Ha; Jung, Ki-Suck
Issue Date
2019-03-22
Publisher
BioMed Central
Citation
BMC Pulmonary Medicine. 2019 Mar 22;19(1):68
Keywords
Chronic obstructive pulmonary diseaseBiomass smokeTobacco smokeExacerbation
Abstract
Background
Risk of exacerbations in chronic obstructive pulmonary disease (COPD) associated with biomass smoke has not been well addressed, although biomass smoke is similar in composition to tobacco smoke.

Methods
To investigate whether the risk of exacerbations in COPD associated with biomass smoke differs from that in COPD associated with tobacco smoke, we recruited patients with COPD from two Korean multicenter prospective cohorts. In a multiple linear regression model, the standardized regression coefficient (β) of biomass smoke exposure ≥25 years was most similar to that (β′) of tobacco smoke exposure ≥10 pack-years (β = − 0.13 and β′ = − 0.14). We grouped patients with COPD into four categories based on the above cut-offs: Less Tobacco-Less Biomass, Less Tobacco-More Biomass, More Tobacco-Less Biomass, and More Tobacco-More Biomass. The main outcome was the incidence of moderate or severe exacerbations.

Results
Among 1033 patients with COPD, 107 were included in Less Tobacco-Less Biomass (mean age: 67 years, men: 67%), 40 in Less Tobacco-More Biomass (mean age: 70 years, men: 35%), 631 in More Tobacco-Less Biomass (mean age: 68 years, men: 98%), and 255 in More Tobacco-More Biomass (mean age: 69 years, men: 97%). The incidence rates of exacerbations were not significantly different between Less Tobacco-More Biomass and More Tobacco-Less Biomass (adjusted incidence rate ratio, 1.03; 95% confidence interval, 0.56–1.89; P = 0.921). No interaction between sex and tobacco and biomass smoke was observed. When propensity score matching with available covariates including age and sex was applied, a similar result was observed.

Conclusions
Patients with COPD associated with biomass smoke and those with COPD associated with tobacco smoke had a similar risk of exacerbations. This suggests that patients with COPD associated with biomass smoke should be treated actively.
ISSN
1471-2466
Language
English
URI
http://hdl.handle.net/10371/147212
DOI
https://doi.org/10.1186/s12890-019-0833-7
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Graduate School of Public Health (보건대학원)Dept. of Public Health (보건학과)Journal Papers (저널논문_보건학과)
College of Medicine/School of Medicine (의과대학/대학원)Internal Medicine (내과학전공)Journal Papers (저널논문_내과학전공)
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