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Effects of Paraquat Ban on Herbicide Poisoning-Related Mortality
- Source :
- Yonsei Medical Journal
- Publication Year :
- 2016
-
Abstract
- Purpose In Korea, registration of paraquat-containing herbicides was canceled in November 2011, and sales thereof were completely banned in November 2012. We evaluated the effect of the paraquat ban on the epidemiology and mortality of herbicide-induced poisoning. Materials and methods This retrospective study analyzed patients treated for herbicide poisoning at 17 emergency departments in South Korea between January 2010 and December 2014. The overall and paraquat mortality rates were compared pre- and post-ban. Factors associated with herbicide mortality were evaluated using logistic analysis. To determine if there were any changes in the mortality rates before and after the paraquat sales ban and the time point of any such significant changes in mortality, R software, version 3.0.3 (package, bcp) was used to perform a Bayesian change point analysis. Results We enrolled 2257 patients treated for herbicide poisoning (paraquat=46.8%). The overall and paraquat poisoning mortality rates were 40.6% and 73.0%, respectively. The decreased paraquat poisoning mortality rate (before, 75% vs. after, 67%, p=0.014) might be associated with increased intentionality. The multivariable logistic analysis revealed the paraquat ban as an independent predictor that decreased herbicide poisoning mortality (p=0.035). There were two major change points in herbicide mortality rates, approximately 3 months after the initial paraquat ban and 1 year after complete sales ban. Conclusion This study suggests that the paraquat ban decreased intentional herbicide ingestion and contributed to lowering herbicide poisoning-associated mortality. The change point analysis suggests a certain timeframe was required for the manifestation of regulatory measures outcomes.
- Subjects :
- 0301 basic medicine
Male
Paraquat
R software
medicine.medical_specialty
Poison control
Independent predictor
Toxicology
Herbicide poisoning
03 medical and health sciences
chemistry.chemical_compound
0302 clinical medicine
Epidemiology
Republic of Korea
Medicine
Humans
030212 general & internal medicine
Demography
Geography
business.industry
Herbicides
Mortality rate
Poisoning
Bayes Theorem
General Medicine
Middle Aged
mortality
030104 developmental biology
Logistic Models
chemistry
Multivariate Analysis
Change points
Female
Original Article
business
Subjects
Details
- ISSN :
- 19762437
- Volume :
- 58
- Issue :
- 4
- Database :
- OpenAIRE
- Journal :
- Yonsei medical journal
- Accession number :
- edsair.doi.dedup.....0a2450ae2248405b76e97c76fd477df1