OBJECTIVES The disaster of the Sewol ferry that sank at sea off Korea’s southern coast of the Yellow Sea on April 16, 2014 was a tragedy that brought grief and despair to the whole country. The aim of this study was to evaluate the mental health effects of this disaster on the community of Ansan, where most victims and survivors resided.
METHODS
The self-administered questionnaire survey was conducted 4 to 6 months after the accident using the Korean Community Health Survey system, an annual nationwide cross-sectional survey. Subjects were 7,076 adults (≥19 years) living in two victimized communities in Ansan, four control communities from Gyeonggi-do, Jindo and Haenam near the accident site. Depression, stress, somatic symptoms, anxiety, and suicidal ideation were measured using the Center for Epidemiologic Studies-Depression Scale, Brief Encounter Psychosocial Instrument, Patient Health Questionnaire-15, and Generalized Anxiety Disorder 7-Item Scale, respectively.
RESULTS
The depression rate among the respondents from Ansan was 11.8%, and 18.4% reported suicidal ideation. Prevalence of other psychiatric disturbances was also higher compared with the other areas. A multiple logistic regression analysis revealed significantly higher odds ratios (ORs) in depression (1.66; 95% confidence interval [CI], 1.36 to 2.04), stress (1.37; 95% CI, 1.10 to 1.71), somatic symptoms (1.31; 95% CI, 1.08 to 1.58), anxiety (1.82; 95% CI, 1.39 to 2.39), and suicidal ideation (1.33; 95% CI, 1.13 to 1.56) compared with Gyeonggi-do. In contrast, the accident areas of Jindo and Haenam showed the lowest prevalence and ORs.
CONCLUSIONS
Residents in the victimized area of Ansan had a significantly higher prevalence of psychiatric disturbances than in the control communities.
Summary
Korean summary
본 연구는 2014년 4월 16일 발생한 세월호 침몰 사고가 지역사회의 정신건강 수준에 미친 영향을 평가하기 위해 실시하였다. 2014년 지역사회건강조사를 활용, 사고 후 6개월 시점에 조사를 시행하였다. 대부분의 희생자가 발생한 안산시 대상자의 11.8%가 우울군으로 분류되었으며, 18.4%가 자살생각을 호소하였고, 그 밖의 유병률도 대조 지역에 비해 높았다.
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Korean J Epidemiol. 2008;30(2):239-251. Published online December 31, 2008
OBJECTIVES Hebei Spirit oil spill accident has brought about the worst coastal oil contamination in Korean history.
Following the accident, residents and volunteers, number exceeding a million from nationwide, were exposed to chemicals from the crude oil itself and dispersants, including volatility organic compounds (VOCs), polycyclic aromatic hydrocarbons (PAHs), and heavy metals through the clean-up works over months. This study was undertaken to investigate the effect of clean-up work on the peripheral nerve function and psychologic status of the residents after a prolonged exposure to clean-up work after the oil spill exposure.
METHODS
We performed a study on the residents of Jango-do Island, Chungnam, on 5 and 12 January 2008, six to eight weeks after the accident. A questionnaire on general characteristics, Korean Beck Depression Inventory (K-BDI), color vision test (Lanthony desaturated D-15 test), and vibration perception threshold test were done. Among 210 residents with 30 years or older, 63 (30%) finished questionnaires and completed at least one among K-BDI, color vision test, or vibration perception threshold test.
Descriptive statistics was done on the residents.
RESULTS
The residents participated in clean-up work for average 20 days, max 30 days, during 6 weeks following the accident. Average work hours were 7.4 hours per day, max 10 hours. On K-BDI, 21 (33.3%) had a severe depressive state.
Mean color confusion index was 1.29 in the right and 1.20 in the left. Mean vibration perception threshold was 3.69 VU (right) and 3.55 VU (left), respectively.
DISCUSSIONS
AND CONCLUSIONS: Compared to literature report, the residents had higher depression scale. Color vision threshold was not higher compared to general population near an industrial complex. Vibration perception threshold was significantly higher than the residents of similar age living near an abandoned mine in southern coastal area only in the age group of forties. These suggests there is some evidence of neuropsychiatric effect related to oil cleaning work and a mid- and long-term study of the oil exposure health effects with continuous monitoring should be done for the exposed residents in the affected area.
Summary
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Disasters are emergencies of a severity and magnitude resulting in deaths, injuries, illness and/or property damage that cannot be effectively managed by the application of routine procedures or resources. These events are caused by nature, the result of technological or manmade error.
Natural disasters include typhoon, flood, heavy snowfall, drought, famine, and earthquake. Natural disasters are unpreventable and, for the most part, uncontrollable.
Technological or manmade disasters include fire, nuclear accidents, bombings, and bioterrorism.
The severity of damage caused by natural or technological disasters is affected by population density in disaster-prone areas, local building codes, community preparedness, and the use of public safety announcements and education on how to respond correctly at the first signs of danger. Recovery following a disaster varies according to the public's access to pertinent information, pre-existing conditions that increase or reduce vulnerability, prior experience with stressful situations, and availability of sufficient savings and insurance.
Epidemiology can be used to investigate the public health and medical consequences of disasters. The aim of disaster epidemiology is to ascertain strategies for the prevention of both acute and chronic health events. Disaster epidemiology includes rapid needs assessment, disease control strategies, assessment of the availability and use of health services, surveillance systems for both descriptive and analytic investigations of disease and injury, and research on risk factors contributing to disease, injury, or death. With both disasters and the number of people affected by such events on the increase, the importance of disasters as a public health program is now widely recognized in Korea. The epidemiologists must do their best effort for prevention of disasters.