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

Consequences of exposure to particulate matter on the ocular surface: Mechanistic insights from cellular mechanisms to epidemiological findings
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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
Investigative Opthalmology & Visual Science.2023; 64(10): 37. CrossRef
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Chang Hwan Kim, Yong Woo Ji
Annals of Optometry and Contact Lens.2023; 22(4): 125. CrossRef
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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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The Journal of Climate Change and Health.2023; : 100296. CrossRef
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Research Article

Minnesota multiphasic personality inventory as related factor for post traumatic stress disorder symptoms according to job stress level in experienced firefighters: 5–year study: In-Sung Chung, Mi-Young Lee, Sung-Won Jung, Chang-Wook Nam; Ann Occup Environ Med 2015;27:16. Published online June 5, 2015; DOI: https://doi.org/10.1186/s40557-015-0067-y

Abstract PDF PubReader ePub

Objectives

As first responders to an increasing number of natural and manmade disasters, active-duty firefighters are at increased risk for physical and psychiatric impairment as reflected by high rates of posttraumatic stress disorder (PTSD). Because little is known about related factor with PTSD according to job stress level among firefighters, we assessed utility of the Minnesota Multiphasic Personality Inventory (MMPI) using 5-year medical surveillance.

Methods

Data were analyzed from 185 male firefighters without psychiatric disease history and who at assessments in 2006 and 2011 completed all questionnaires on personal behaviors (including exercise, drinking and smoking habits) and job history (including job duration and department). MMPI, Events Scale-Revised-Korean version (IES-R-K) and Korean Occupational Stress Scale-Short Form (KOSS-SF) were used to screen for personality trait, PTSD symptom presence and job stress level, respectively. IES-R-K subgroups were compared using two-sample t- and χ2 tests, and factors influencing IES-R-K according to KOSS-SF were determined using uni- and multivariate logistic regression.

Results

Mean age and job duration were higher in PTSD-positive than negative groups. In multivariate analysis, increased PTSD risk was associated with: job duration (Odds ratio (OR) = 1.064, 95 % CI 1.012–1.118) for firefighters overall; masculinity-femininity (OR = 5.304, 95 % CI 1.191–23.624) and job duration (OR = 1.126, 95 % CI 1.003–1.265) for lower job stress level; and social introversion (OR = 3.727, 95 % CI 1.096–12.673) for higher job stress level.

Conclusions

MMPI relates with PTSD according to job stress level among experienced firefighters. Masculinity-femininity and social introversion were the strongest related factor for PTSD symptom development in low and high job stress levels, respectively.

Citations

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