Paraquat application and respiratory health effects among South Korean farmers

Eun Shil Cha, Yun Keun Lee, Eun Kyeong Moon, Yong Bae Kim, Yong Jin Lee, Woo Chul Jeong, Eun Young Cho, Ik Jin Lee, Jongil Hur, Mina Ha, Won Jin Lee

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

Objectives: Paraquat is commonly used worldwide as major herbicide. The objective of this study was to investigate the association among farmers between occupational paraquat exposure and respiratory health effects. Methods: A cross-sectional survey of health effects related to an oil spill was conducted in South Korea from 2008 to 2009. For this analysis, a total of 2882 full-time farmers were selected from the overall sample. Data collection included an interviewer-administered questionnaire and spirometry testing. Logistic regression analysis and linear regression analysis were performed to evaluate the relationship between paraquat exposure and respiratory health outcomes after adjustment for potential confounders. Results: The risks of self-reported physician-diagnosed asthma, chronic obstructive pulmonary disease and allergic rhinitis were non-significantly increased among paraquat-applying farmers compared with non-paraquat-applying farmers. Although the results of a pulmonary function test fell within normal limits, a decline in forced vital capacity and forced expiratory volume in one second was apparent among paraquatapplying farmers compared with non-paraquat-applying farmers. Forced vital capacity (β=-5.20, p<0.001) and forced expiratory volume in one second (β=-1.89, p=0.010) significantly decreased with each unit increase in years of paraquat application. Paraquat-applying farmers showed a significant exposure - response relationship between restrictive ventilatory defects and paraquat application years (p trend=0.015) or lifetime days of application (p trend=0.007). Conclusions: Our findings suggest a possible association between paraquat application and adverse respiratory health effects among farmers.

Original languageEnglish
Pages (from-to)398-403
Number of pages6
JournalOccupational and Environmental Medicine
Volume69
Issue number6
DOIs
Publication statusPublished - 2012 Jun

ASJC Scopus subject areas

  • Public Health, Environmental and Occupational Health

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