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KMID : 1170320190250030001
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Korean Journal of Health Economics and Policy
2019 Volume.25 No. 3 p.1 ~ p.19
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Issues for Method in Estimating Cost of Illness: The Case of Glaucoma
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Kim Youn-Hee
Park Joo-Yeon
Bae Eun-Young
Song Hyun-Jin
Shin Sang-Jin
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Abstract
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Objective: This study aims to deal with key issues related to the costing method of cost of illness (COI) in the case of glaucoma, mainly focusing on the Korean context.
Methods: This study presents the key issues of each cost item with a case for the cost of glaucoma. From a societal perspective, the cost items for calculating COI consist of formal medical cost, informal medical cost, transportation cost, caregiver cost, patient‘s time cost, and productivity loss cost. Formal medical costs of glaucoma were estimated based on the statistical analysis of health insurance claims data. Other cost items (informal medical cost, transportation cost, caregiver cost, patient’s time cost, and productivity loss cost) were calculated through surveys on patients and caregivers.
Results: The costs of glaucoma consist of medical costs (formal costs and informal costs), transportation costs, patient-time costs, caregiver costs, and productivity costs due to morbidity. The total cost of glaucoma excluding the productivity costs in 2010 was 252.7 ? 308.7 billion KRW. It means that there was a difference of over 20% between results according to the data sources, analytic perspective, and calculating methods. The total cost of glaucoma including the productivity costs is 8,643.5 ? 10,350.6 billion KRW. The productivity cost was over 97% of the total cost and it was the cause of huge variation and uncertainty.
Conclusion: It is necessary to use the appropriate data sources and calculation methods per cost item when conducting a COI study.
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KEYWORD
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cost of illness, disease burden, glaucoma
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