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      Real-World Epidemiology, Treatment Patterns, and Disease Burden of Chronic Hepatitis B and HDV Co-Infection in South Korea

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          Abstract

          Introduction

          Long-term complications of chronic hepatitis B (CHB) viral infection, such as cirrhosis, hepatocellular carcinoma (HCC), and liver failure, cause a large disease burden. This study aimed to describe the epidemiology, clinical outcomes, and treatment patterns of CHB infection and co-infection with hepatitis D virus (HDV) in South Korea.

          Methods

          The retrospective, observational study used existing data from the Health Insurance Review and Assessment Service (HIRA) database. Confirmed cases of (CHB) and HBV/HDV co-infection were identified between 2013 and 2019. Hepatitis C virus co-infections and acute HBV infections were excluded. Incident cases diagnosed between 2015 and 2018 with no prior disease history up to 2 years were included. Patient characteristics, clinical outcomes, economic burden, and healthcare-resource utilization were described.

          Results

          The estimated 7-year prevalence of CHB and HBV/HDV co-infection were 0.9% and 0.0024%, respectively. The prevalence was higher among 45–54 years old (CHB: 1.6%, HBV/HDV: 0.0049%) and males (1.1%, 0.0035%). The 5-year cumulative incidences of compensated cirrhosis, decompensated cirrhosis, HCC, and liver transplantation were 13.3%, 7.1%, 8.4%, and 0.7%, respectively. Hyperlipidemia (40.6%), hypertension (23.5%), and peptic ulcer (23.7%) were the more prevalent comorbidities. Among CHB patients, 48.1% received ≥ 1 prescribed anti-HBV drug including interferon or nucleos(t)ide analogues and 64.4% had ≥ 1 hospitalization compared to 80.4% and 79.4% HBV/HDV patients. Estimated total healthcare costs for CHB and HBV/HDV were US$786 million and $62 million, respectively.

          Conclusions

          These findings provide insights to the epidemiology, clinical burden, treatment patterns, and healthcare costs of CHB and HBV/HDV co-infection in South Korea.

          Supplementary Information

          The online version contains supplementary material available at 10.1007/s40121-023-00860-8.

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          Most cited references45

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          Towards Actualizing the Value Potential of Korea Health Insurance Review and Assessment (HIRA) Data as a Resource for Health Research: Strengths, Limitations, Applications, and Strategies for Optimal Use of HIRA Data

          Health Insurance and Review Assessment (HIRA) in South Korea, also called National Health Insurance (NHI) data, is a repository of claims data collected in the process of reimbursing healthcare providers. Under the universal coverage system, having fee-for-services covering all citizens in South Korea, HIRA contains comprehensive and rich information pertaining to healthcare services such as treatments, pharmaceuticals, procedures, and diagnoses for almost 50 million beneficiaries. This corpus of HIRA data, which constitutes a large repository of data in the healthcare sector, has enormous potential to create value in several ways: enhancing the efficiency of the healthcare delivery system without compromising quality of care; adding supporting evidence for a given intervention; and providing the information needed to prevent (or monitor) adverse events. In order to actualize this potential, HIRA data need to actively be utilized for research. Thus understanding this data would greatly enhance this potential. We introduce HIRA data as an important source for health research and provide guidelines for researchers who are currently utilizing HIRA, or interested in doing so, to answer their research questions. We present the characteristics and structure of HIRA data. We discuss strengths and limitations that should be considered in conducting research with HIRA data and suggest strategies for optimal utilization of HIRA data by reviewing published research using HIRA data.
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            The Charlson comorbidity index is adapted to predict costs of chronic disease in primary care patients.

            (1) To determine chronic illness costs for large cohort of primary care patients, (2) to develop prospective model predicting total costs over one year, using demographic and clinical information including widely used comorbidity index. Data including diagnostic, medication, and resource utilization were obtained for 5,861 patients from practice-based computer system over a 1-year period beginning December 1, 1993, for retrospective analysis. Hospital cost data were obtained from hospital cost accounting system. Average annual per patient cost was $2,655. Older patients and those with Medicare or Medicaid had higher costs. Hospital costs were $1,558, accounting for 58.7% of total costs. In the predictive model, individuals with higher comorbidity incurred exponentially higher annual costs, from $4,317 with comorbidity score of two, to $5,986 with score of three, to $13,326 with scores greater than seven. To use an adapted comorbidity index to predict total yearly costs, four conditions should be added to the index: hypertension, depression, and use of warfarin with a weight of one, skin ulcers/cellulitis, a weight of two. The adapted comorbidity index can be used to predict resource utilization. Predictive models may help to identify targets for reducing high costs, by prospectively identifying those at high risk.
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              Natural history of chronic hepatitis B: special emphasis on disease progression and prognostic factors.

              The natural history of chronic hepatitis B virus (HBV) infection and disease is complex and highly variable. We review the natural history of chronic hepatitis B with emphasis on the rates of disease progression and factors influencing the course of the liver disease. Chronic hepatitis B is characterized by an early replicative phase (HBeAg positive chronic hepatitis) and a late low or non-replication phase with HBeAg seroconversion and liver disease remission (inactive carrier state). Most patients become inactive carriers after spontaneous HBeAg seroconversion with good prognosis, but progression to HBeAg negative chronic hepatitis due to HBV variants not expressing HBeAg occurs at a rate of 1-3 per 100 person years following HBeAg seroconversion. The incidence of cirrhosis appears to be about 2-fold higher in HBeAg negative compared to HBeAg positive chronic hepatitis. In the cirrhotic patient the 5-year cumulative risk of developing hepatocellular carcinoma is 17% in East Asia and 10% in the Western Europe and the United States and the 5-year liver related death rate is 15% in Europe and 14% in East Asia. There is a growing understanding of viral, host and environmental factors influencing disease progression, which ultimately could improve the management of chronic hepatitis B.
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                Author and article information

                Contributors
                yuricho@ncc.re.kr
                Journal
                Infect Dis Ther
                Infect Dis Ther
                Infectious Diseases and Therapy
                Springer Healthcare (Cheshire )
                2193-8229
                2193-6382
                28 September 2023
                28 September 2023
                October 2023
                : 12
                : 10
                : 2387-2403
                Affiliations
                [1 ]Center for Liver and Pancreatobiliary Cancer, National Cancer Center, ( https://ror.org/02tsanh21) 323 Ilsan-ro, Ilsandong-gu, Goyang, Gyeonggi-do 10408 Republic of Korea
                [2 ]Janssen Pharmaceuticals, Seoul, Republic of Korea
                [3 ]Cerner Enviza, Seoul, Republic of Korea
                Author information
                http://orcid.org/0000-0002-4488-5352
                Article
                860
                10.1007/s40121-023-00860-8
                10600088
                37768482
                6d6aa057-5b19-4647-b439-0ad226315d1e
                © The Author(s) 2023

                Open Access This article is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License, which permits any non-commercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by-nc/4.0/.

                History
                : 27 June 2023
                : 16 August 2023
                Funding
                Funded by: Janssen Asia Pacific
                Categories
                Original Research
                Custom metadata
                © Springer Healthcare Ltd., part of Springer Nature 2023

                chronic hepatitis b,hbv/hdv co-infections,epidemiology,clinical burden,healthcare resource utilization

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