Specific work activities and exposure to respiratory hazards - predictors of lung function impairment among crop farmers
DOI:
https://doi.org/10.3889/oamjms.2020.4641Keywords:
chronic respiratory symptoms, spirometry, crop farming, questionnaire, job activities, respiratory healthAbstract
OBJECTIVE: The objective of the study was to evaluate the specific work activities and occupational exposure to respiratory hazards as predictors of chronic respiratory symptoms development, lung function decline, and respiratory health impairment among crop farmers.
METHODS: A cross-sectional survey was performed, including 87 crop farmers (mean age: 53.4 ± 7.8 years; and mean exposure duration: 22.9 ± 7.8 years) and 80 office workers as a control group (mean age: 52.7 ± 8.2 years) matched for age, smoking habits, and socioeconomic status. Subjects were evaluated by a questionnaire on respiratory symptoms in the past 12 months and spirometry testing.
RESULTS: Crop farmers had a significantly higher prevalence of cough (41.4), phlegm (28.7%), and dyspnea (21.8%), than controls (p < 0.05). All mean baseline spirometric parameters were lower in crop farmers, but statistical significance was confirmed only for MEF25, MEF50, and MEF75 (p = 0.003, p = 0.000, and p = 0.001, respectively). Most of the respiratory symptoms were significantly associated with common work activities of crop farmers and all-day exposure to certain respiratory hazards. Age, exposure duration, and their combined effect with smoking habit had a significant effect on forced expiratory volume in one second FEV1 and FEV1/forced vital capacity.
CONCLUSION: The results confirm that occupational exposure among crop farmers is associated with higher prevalence of respiratory symptoms and lung function decline and, together with specific workflow activities, may not only be a predictors of respiratory health impairment, but also a key tool in the creation of preventive strategies.
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