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Prevalence and risk factors of chronic obstructive pulmonary disease in dairy farmers AIRBAg study

Abstract : BACKGROUND: The AIRBAg study was designed to assess the prevalence of chronic obstructive pulmonary disease (COPD) in dairy farmers and to define its associated risk factors. METHODS: Between March 2012 and February 2017 randomly selected dairy farmers in the French region of Brittany were asked to complete a self-administered questionnaire and undergo an occupational health check-up with electronic mini-spirometry and standard spirometry. Those having one or more of the following features: chronic cough, chronic bronchitis, wheezing, dyspnea and/or a ratio FEV1/FEV6 < 80% were then referred to a pulmonologist for further check-up including spirometry with a reversibility test. Each COPD case was matched with three controls (dairy farmers and non-farm employees), for sex and age ( ± 5 years). Conditional multivariate logistic regression models were used to estimate the odds ratios between COPD occurrence and various risk factors. RESULTS: The 1203 farmers examined included 525 (43.6%) who were "at risk of bronchial obstruction" and 432 (35.9%) of these saw the pulmonologist. This screening identified 16 (1.3%) cases of COPD, including eight non-smokers and five with an FEV1 < 80% of predicted values. Their average age was 54.6 ( ± 7.7) years and 10 of them were men. None complained of illness before the study. Multivariate analyses revealed no significant occupational risk factors for COPD. CONCLUSIONS: This unexpected result may be because Breton dairy farms began to modernize early (1950s), giving rise to conditions with much lower exposure to airborne contaminants.
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https://hal-univ-rennes1.archives-ouvertes.fr/hal-01936326
Contributor : Laurent Jonchère <>
Submitted on : Tuesday, November 27, 2018 - 1:12:11 PM
Last modification on : Monday, February 24, 2020 - 1:28:02 PM

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Stéphane Jouneau, Solenne Marette, Ange-Marie Robert, Thomas Gouyet, Stéphanie Guillot, et al.. Prevalence and risk factors of chronic obstructive pulmonary disease in dairy farmers AIRBAg study. Environmental Research, Elsevier, 2019, 169, pp.1-6. ⟨10.1016/j.envres.2018.10.026⟩. ⟨hal-01936326⟩

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