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. 2018 Mar 1;197(5):595-610.
doi: 10.1164/rccm.201701-0205OC. Epub 2017 Sep 12.

Airflow Obstruction and Use of Solid Fuels for Cooking or Heating: BOLD Results

André F S Amaral  1 , Jaymini Patel  2 , Bernet S Kato  3 , Daniel O Obaseki  4 , Hervé Lawin  5 , Wan C Tan  6 , Sanjay K Juvekar  7 , Imed Harrabi  8 , Michael Studnicka  9 , Emiel F M Wouters  10 , Li-Cher Loh  11 , Eric D Bateman  12 , Kevin Mortimer  13 , A Sonia Buist  14 , Peter G J Burney  15 ; BOLD Collaborative Research Group
Affiliations

Airflow Obstruction and Use of Solid Fuels for Cooking or Heating: BOLD Results

André F S Amaral et al. Am J Respir Crit Care Med. .

Abstract

Rationale: Evidence supporting the association of COPD or airflow obstruction with use of solid fuels is conflicting and inconsistent.

Objective: To assess the association of airflow obstruction with self-reported use of solid fuels for cooking or heating.

Methods: We analysed 18,554 adults from the BOLD study, who had provided acceptable post-bronchodilator spirometry measurements and information on use of solid fuels. The association of airflow obstruction with use of solid fuels for cooking or heating was assessed by sex, within each site, using regression analysis. Estimates were stratified by national income and meta-analysed. We carried out similar analyses for spirometric restriction, chronic cough and chronic phlegm.

Measurements and main results: We found no association between airflow obstruction and use of solid fuels for cooking or heating (ORmen=1.20, 95%CI 0.94-1.53; ORwomen=0.88, 95%CI 0.67-1.15). This was true for low/middle and high income sites. Among never smokers there was also no evidence of an association of airflow obstruction with use of solid fuels (ORmen=1.00, 95%CI 0.57-1.76; ORwomen=1.00, 95%CI 0.76-1.32). Overall, we found no association of spirometric restriction, chronic cough or chronic phlegm with the use of solid fuels. However, we found that chronic phlegm was more likely to be reported among female never smokers and those who had been exposed for ≥20 years.

Conclusion: Airflow obstruction assessed from post-bronchodilator spirometry was not associated with use of solid fuels for cooking or heating.

Keywords: Airflow obstruction; COPD; Low income countries; Solid fuels (biomass).

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Figures

Figure 1.
Figure 1.
Correlation of airflow obstruction (A), spirometric restriction (B), chronic cough (C), and chronic phlegm (D) with use of solid fuels for cooking or heating in men in the BOLD (Burden of Obstructive Lung Disease) study.
Figure 1.
Figure 1.
Correlation of airflow obstruction (A), spirometric restriction (B), chronic cough (C), and chronic phlegm (D) with use of solid fuels for cooking or heating in men in the BOLD (Burden of Obstructive Lung Disease) study.
Figure 2.
Figure 2.
Correlation of airflow obstruction (A), spirometric restriction (B), chronic cough (C), and chronic phlegm (D) with use of solid fuels for cooking or heating in women in the BOLD (Burden of Obstructive Lung Disease) study.
Figure 2.
Figure 2.
Correlation of airflow obstruction (A), spirometric restriction (B), chronic cough (C), and chronic phlegm (D) with use of solid fuels for cooking or heating in women in the BOLD (Burden of Obstructive Lung Disease) study.
See this image and copyright information in PMC

Comment in

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