Dong-Hee Koh

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OBJECTIVES We examined the relationship between chronic rhinosinusitis and occupation. METHODS We analyzed data from the 1998, 2001, and 2005 Korea National Health and Nutrition Examination Survey (KNHANES). Men and women aged 20-59 who participated in the three KNHANES were included to analyze the relationship between chronic rhinosinusitis and(More)
OBJECTIVE Cancer mortality and morbidity are described for the first time in all Korean workers exposed to ionizing radiation. METHODS Based on hospital admissions, Standardized Rate Ratios (SRR) and Standardized Mortality Ratios (SMR) were modeled with Poisson regression. RESULTS Cancer admissions during 2000 to 2005 were low compared with autoworkers(More)
OBJECTIVES The purpose of this study was to evaluate the exposure to arsenic in preventive maintenance (PM) engineers in a semiconductor industry by detecting speciated inorganic arsenic metabolites in the urine. METHODS The exposed group included 8 PM engineers from the clean process area and 13 PM engineers from the ion implantation process area; the(More)
OBJECTIVES The published literature provides useful exposure measurements that can aid retrospective exposure assessment efforts, but the analysis of this data is challenging as it is usually reported as means, ranges, and measures of variability. We used mixed-effects meta-analysis regression models, which are commonly used to summarize health risks from(More)
The major purpose of this study is to construct a retrospective exposure assessment for benzene through a review of literature on Korea. Airborne benzene measurements reported in 34 articles were reviewed. A total of 15,729 individual measurements were compiled. Weighted arithmetic means [AM(w)] and their variance calculated across studies were summarized(More)
OBJECTIVES Benzene is a well-known haematological toxin causing aplastic anaemia and leukaemia. Some recent studies have shown that low-level benzene exposure (<1 ppm) disturbs the haematopoietic system. However, other studies showed inconsistent results. The aim of the present study was to examine the relationship between low-level benzene exposure and(More)
BACKGROUND Although baker's asthma (BA) is a common occupational asthma, there have been few reports on this disease in Korean subjects. OBJECTIVES We evaluated the prevalence of serum-specific IgE, IgG1, and IgG4 antibodies in relation to work-related respiratory symptoms in a single industrial bakery. METHODS Three hundred and ninety-two bakery(More)
BACKGROUND Cement is used widely in the construction industry, though it contains hazardous chemicals such as hexavalent chromium. Several epidemiological studies have examined the association between cement dust exposure and cancer, but these associations have proved inconclusive. In the present study, we examined the association between dust exposure and(More)
Although methylene diphenyl diisocyanate (MDI) is widely used in industries, there have been few studies of the pathogenic mechanisms of MDI-induced occupational asthma (MDI-OA). We performed immunohistochemical analyses, measured inflammatory mediators and cytokines, and quantified histamine release (HR) from peripheral basophils in MDI-OA patients.(More)
The epidemiologic evidence for the carcinogenicity of lead is inconsistent and requires improved exposure assessment to estimate risk. We evaluated historical occupational lead exposure for a population-based cohort of women (n=74,942) by calibrating a job-exposure matrix (JEM) with lead fume (n=20,084) and lead dust (n=5383) measurements collected over(More)