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Korean J Schizophr Res > Volume 22(1); 2019 > Article
Korean Journal of Schizophrenia Research 2019;22(1):8-13.
DOI: https://doi.org/10.16946/kjsr.2019.22.1.8    Published online April 30, 2019.
A Study of Total Medical Cost and Hospitalization Risk of Patients with Schizophrenia and Type 1 Diabetes Mellitus.
Sang Uk Lee, You Seok Kim
1National Center for Mental Health, Seoul, Korea. kysmd@hanmail.net
2Department of Preventive Medicine, School of Medicine, Kyung Hee University, Seoul, Korea.
The aim of this study was to explore the prevalence of type 1 diabetes in patients with schizophrenia and their total medical costs and risk of hospitalization.
This study used Health Insurance Review and Assessment Service data in Korea. To examine total medical costs and risk of hospitalization, we selected 1,510 subjects with schizophrenia (half with and half without type 1 diabetes) that were 1:1 matched via propensity score matching. In health care system perspective, total medical costs included out-of-pocket and insurer's costs. Logistic regression models were used to examine the risk of hospitalization.
The prevalence of type 1 diabetes in patients with schizophrenia was 3.87 per 1,000 person year. Among patients with schizophrenia, the amount of total average medical costs and hospitalization costs in patients with type 1 diabetes was 1.49 and 1.59 times higher than those in patients without it, respectively. The odds of hospitalization were higher among patients with type 1 diabetes compared with those without it (odds ratio, OR=1.97 ; 95% CI 1.60–2.43).
This study showed that medical costs and risk of hospitalization were higher in schizophrenia patients with type 1 diabetes. Therefore, these individuals may require specific care programs.
Key Words: Schizophrenia · Comorbidities · Type 1 diabetes · Medical cost


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