The Impact of Visual Impairment on Healthcare Use among Four Medical Institution Types: A Nationwide Retrospective Cohort Study in Korea
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Purpose: The aim of this study was to determine the effect of visual impairment (VI) onset on the use of healthcare services across four types of institutions in South Korea. Materials and Methods: We utilized data from the National Health Insurance Service database from 2006 to 2015 for 714 persons who experienced VI onset in 2009–2012 and for 2856 matched persons for a 1:4 ratio of matching controls. We compared trends in healthcare use and expenditures for eye diseases at clinics, hospitals, general hospitals, and tertiary teaching hospitals using 3 years of data prior to and after the onset of VI. Results: The inpatient and outpatient healthcare expenditures of individuals with VI were higher than those without VI, peaking at the pre-VI onset period in tertiary teaching hospitals. During the pre-VI onset period, the proportion of healthcare expendi tures attributed to eye diseases ranged 11%–40.8% among individuals with VI, but 1.9%–11% among individuals without VI at the four types of institutions. The differences in healthcare use between the pre- and post-VI periods were primarily observed in ter tiary teaching hospitals for inpatient care. There was a peak in utilization of outpatient care in the year preceding VI onset at ter tiary teaching hospitals, clinics, and hospitals, but there was a decrease in outpatient care over time during the post-VI period. Conclusion: Our findings suggest economic burden of healthcare in tertiary teaching hospitals during pre-VI onset period and a potential lack of regular management and continuity of care in post-VI periods.
Abstract
Purpose: The aim of this study was to determine the effect of visual impairment (VI) onset on the use of healthcare services across four types of institutions in South Korea. Materials and Methods: We utilized data from the National Health Insurance Service database from 2006 to 2015 for 714 persons who experienced VI onset in 2009–2012 and for 2856 matched persons for a 1:4 ratio of matching controls. We compared trends in healthcare use and expenditures for eye diseases at clinics, hospitals, general hospitals, and tertiary teaching hospitals using 3 years of data prior to and after the onset of VI. Results: The inpatient and outpatient healthcare expenditures of individuals with VI were higher than those without VI, peaking at the pre-VI onset period in tertiary teaching hospitals. During the pre-VI onset period, the proportion of healthcare expendi tures attributed to eye diseases ranged 11%–40.8% among individuals with VI, but 1.9%–11% among individuals without VI at the four types of institutions. The differences in healthcare use between the pre- and post-VI periods were primarily observed in ter tiary teaching hospitals for inpatient care. There was a peak in utilization of outpatient care in the year preceding VI onset at ter tiary teaching hospitals, clinics, and hospitals, but there was a decrease in outpatient care over time during the post-VI period. Conclusion: Our findings suggest economic burden of healthcare in tertiary teaching hospitals during pre-VI onset period and a potential lack of regular management and continuity of care in post-VI periods.
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