Annals of Occupational and Environmental Medicine

Research Article

Spatial analysis between particulate matter and emergency room visits for conjunctivitis and keratitis: Jung-Youb Lee, Jung-Won Kim, Eun-Jung Kim, Mi-Young Lee, Chang-Wook Nam, In-Sung Chung; Ann Occup Environ Med 2018;30:41. Published online June 11, 2018; DOI: https://doi.org/10.1186/s40557-018-0252-x

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Background

The concentration of particulate matter in the air varies depending on the region because it is lightweight and generated from a variety of sources. To assess the relationship between particulate matter and eye disease, this study analyzes the concentration data obtained from spatial analysis of particulate matter and emergency visit data.

Methods

The study included 769 residents of Daegu, Korea who had visited an emergency room for the problem of conjunctivitis or keratitis. Concentrations of PM₁₀ and other air pollutants were obtained from the Korean Ministry of the Environment. PM₁₀ concentrations and the number of patients from each of 143 administrative dongs (sub-municipal level administrative units) of the city of Daegu were obtained using spatial analysis. The patient distribution and PM₁₀ concentration were mapped for comparison, and their relationship was examined using scatter plot, regression analysis, and the independent sample t-test.

Results

The number of patients with conjunctivitis and keratitis was significantly higher in the regions of the top 20% areas than the bottom 20% areas in terms of PM₁₀ concentration. The distribution of PM₁₀ concentration and number of patients was visually similar on the map. The concentration of PM₁₀ and the number of patients showed a dose–response relationship. When the concentrations of other air polluta9nts were controlled for, the numbers of conjunctivitis and keratitis patients were 0.04 per 1000 ER patients and 0.10 per 1000 ER patients, respectively.

Conclusion

As PM₁₀ is associated with the prevalence of conjunctivitis and keratitis, measures to reduce particulate matter through environmental methods are needed.

Electronic supplementary material

The online version of this article (10.1186/s40557-018-0252-x) contains supplementary material, which is available to authorized users.

Citations

Citations to this article as recorded by

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Phit Upaphong, Chanisa Thonusin, Ornpailin Wanichthanaolan, Nipon Chattipakorn, Siriporn C. Chattipakorn
Environmental Pollution.2024; 345: 123488. CrossRef
Mechanisms of PM10 Disruption of the Nrf2 Pathway in Cornea
Mallika Somayajulu, Farooq S. Muhammed, Robert Wright, Sharon A. McClellan, Linda D. Hazlett
International Journal of Molecular Sciences.2024; 25(7): 3754. CrossRef
Impact of Airborne Exposure to PM10 Increases Susceptibility to P. aeruginosa Infection
Sharon A. McClellan, Robert Wright, Farooq Muhammed, Linda D. Hazlett
International Journal of Environmental Research and Public Health.2024; 21(6): 722. CrossRef
Air Pollution and Meteorological Conditions Significantly Associated With Vernal Keratoconjunctivitis Exacerbations
Eran Levanon, Ido Peles, Michal Gordon, Lena Novack, Erez Tsumi
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Mallika Somayajulu, Sharon A. McClellan, Robert Wright, Ahalya Pitchaikannu, Bridget Croniger, Kezhong Zhang, Linda D. Hazlett
International Journal of Molecular Sciences.2023; 24(4): 3911. CrossRef
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PM10 and Pseudomonas aeruginosa: effects on corneal epithelium
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Frontiers in Cellular and Infection Microbiology.2023;[Epub] CrossRef
The effect of social determinants of health on severity of microbial keratitis presentation at a tertiary eye care hospital in Southern India
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Indian Journal of Ophthalmology.2023; 71(6): 2448. CrossRef
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Yee Ling Wong, Shiao Wei Wong, Darren S.J. Ting, Alankrita Muralidhar, Sagnik Sen, Olivia Schaff, Hannah Istre-Wilz, Barbara Erny
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Association between air pollution and emergency room visits for eye diseases and effect modification by temperature in Beijing, China
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Airborne Particulates Affect Corneal Homeostasis and Immunity
Mallika Somayajulu, Sandamali Ekanayaka, Sharon A. McClellan, Denise Bessert, Ahalya Pitchaikannu, Kezhong Zhang, Linda D. Hazlett
Investigative Opthalmology & Visual Science.2020; 61(4): 23. CrossRef
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Dai Miyazaki, Kazumi Fukagawa, Atsuki Fukushima, Hiroshi Fujishima, Eiichi Uchio, Nobuyuki Ebihara, Jun Shoji, Etsuko Takamura, Kenichi Namba, Yuichi Ohashi, Shigeki Okamoto, Yoshiyuki Satake, Hiroshi Ohtsu, Yumiko Shimizu, Yoshitsugu Inoue
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Research Article

Factors related to heart rate variability among firefighters: Jae-Hong Shin, Jung-Youb Lee, Seon-Hee Yang, Mi-Young Lee, In-Sung Chung; Ann Occup Environ Med 2016;28:25. Published online June 13, 2016; DOI: https://doi.org/10.1186/s40557-016-0111-6

Abstract PDF PubReader ePub

Objectives

The aim of this study was to investigate factors associated with heart rate variability in firefighters working in a metropolitan city in South Korea.

Methods

Self-administered questionnaires including Korean Occupational Stress Scale (KOSS) as well as surveys collecting socio-demographic characteristics and work-related factors were given to 962 firefighters. After exclusion for missing data, 645 firefighters were included, and analysis of covaiance adjusted for the general risk factors and job characteristics were used to assess the relationship between heart rate variability and associated factors.

Results

SDNN and RMSSD and were decreased in the area of occupational climate of the group with high job stress (p = 0.027, p = 0.036). HF(ln) was decreased in the area of organizational system and occupational climate of the group with high stress that statistically significant level (p = 0.034, p = 0.043).

Conclusions

Occupational climate and organizational system are associated with reduction of heart rate variability. Preventive medical care plans for cardiovascular disease of firefighters through the analysis and evaluation of job stress factors are needed.

Citations

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