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Kim C.-G.,Cheongju University | Jo S.,Dankook University | Kim J.S.,Health Insurance Review and Assessment Service
World Journal of Gastroenterology | Year: 2012

AIM: To evaluate the impact of surgical volume on nationwide hospital mortality after pancreaticoduodenectomy (PD) for periampullary tumors in South Korea. METHODS: Periampullary cancer patients who underwent PD between 2005 and 2008 were analyzed from the database of the Health Insurance Review and Assessment Service of South Korea. A total of 126 hospitals were divided into 5 categories, each similar in terms of surgical volume for each category. We used hospital mortality as a quality indicator, which was defined as death during the hospital stay for PD, and calculated adjusted mortality through multivariate logistic models using several confounder variables. RESULTS: A total of eligible 4975 patients were enrolled in this study. Average annual surgical volume of hospitals was markedly varied, ranging from 215 PDs in the very-high-volume hospital to < 10 PDs in the verylow- volume hospitals. Admission route, type of medical security, and type of operation were significantly different by surgical volume. The overall hospital mortality was 2.1% and the observed hospital mortality by surgical volume showed statistical difference. Surgical volume, age, and type of operation were independent risk factors for hospital death, and adjusted hospital mortality showed a similar difference between hospitals with observed mortality. The result of the Hosmer- Lemeshow test was 5.76 (P = 0.674), indicating an acceptable appropriateness of our regression model. CONCLUSION: The higher-volume hospitals showed lower hospital mortality than the lower-volume hospitals after PD in South Korea, which were clarified through the nationwide database. © 2012 Baishideng. Source


Jang J.,Health Insurance Review and Assessment Service | Gary Chan K.C.,University of Washington | Huang H.,Harvard University | Sullivan S.D.,University of Washington
Annals of Allergy, Asthma and Immunology | Year: 2013

Background Few studies have examined recent trends in medical expenditures and outcomes in patients with asthma. Objective To examine the level and changes in medical expenditures, health status, and functional outcomes in adults, adolescents, and children with asthma and to provide nationally representative estimates of asthma medical costs from 2000 through 2009. Methods Medical Expenditure Panel Surveys from 2000 through 2009 were used to estimate the trends of medical expenditures (adjusted for medical price inflation), number of workdays lost or schooldays lost, and/or the physical component summary and the mental component summary from the revised 12-Item Short-Form Health Survey, adjusting for sociodemographic variables and comorbidities. Results The averaged physical component summary decreased 0.09 units annually (95% confidence interval 0.02-0.16, P <.01) in adults, but there were no significant changes to the averaged mental component summary. There was no significant change in the number of workdays lost and a marginal decrease of 1.8% per annum in the number of schooldays lost (95% confidence interval -0.1 to 3.5, P =.06). The medical expenditure means increased 2.5% annually in adolescents (95% confidence interval 0.0-4.9, P =.049), but there were no significant changes for adults and children. The total incremental medical expenditures of asthma in the United States were estimated to be $62.8 billion in 2009. Conclusion This study found that, although medical costs for patients with asthma increased or remained stable across all age groups over a 10-year period, outcomes did not improve. Considering the economic burden of asthma and the previous 10-year performance, continued attention should be focused on asthma management in the United States. © 2013 American College of Allergy, Asthma & Immunology. Published by Elsevier Inc. All rights reserved. Source


Hong J.-S.,Health Insurance Review and Assessment Service | Kang H.-C.,Korea Institute for Health and Social Affairs
Medicine (United States) | Year: 2014

Issues regarding healthcare disparity continue to increase in connection with access to quality care for acute myocardial infarction (AMI), even though the case-fatality rate (CFR) continues to decrease.We explored regional variation in AMI CFRs and examined whether the variation was due to disparities in access to quality medical services for AMI patients.A dataset was constructed from the Korea National Health Insurance Claims Database to conduct a retrospective cohort study of 95,616 patients who were admitted to a hospital in Korea from 2003 to 2007 with AMI. Each patient was followed in the claims database for information about treatment after admission or death.The procedure rate decreased as the region went "down" from Seoul to the county level, whereas the AMI CFR increased as the county level as a function of proximity to the county level (30-day AMI CFRs: Seoul, 16.4%; metropolitan areas, 16.2%, cities; 18.8%, counties, 39.4%). Even after adjusting for covariates, an identical regional variation in the odds of patients receiving treatment services and dying was identified. After adjusting for invasive and medical management variables in addition to earlier covariates, the death risk in the counties remained statistically significantly higher than in Seoul; however, the degree of the difference decreased greatly and the significant differences in metropolitan areas and cities disappeared.Policy interventions are needed to increase access to quality AMI care in county-level local areas because regional differences in the AMI CFR are likely caused by differences in the performance of medical and invasive management among the regions of Korea. Additionally, a public education program to increase the awareness of early symptoms and the necessity of visiting the hospital early should be established as the first priority to improve the outcome of AMI patents, especially in county-level local areas. Copyright © 2014 Wolters Kluwer Health / Lippincott Williams & Wilkins. Source


Yi S.-W.,Catholic Kwandong University | Ohrr H.,Yonsei University | Hong J.-S.,Health Insurance Review and Assessment Service | Yi J.-J.,Catholic Kwandong University
Journal of Preventive Medicine and Public Health | Year: 2013

Objectives: The aim of this study was to evaluate the association between Agent Orange exposure and self-reported diseases in Korean Vietnam veterans. Methods: A postal survey of 114 562 Vietnam veterans was conducted. The perceived exposure to Agent Orange was assessed by a 6-item questionnaire. Two proximity-based Agent Orange exposure indices were constructed using division/brigade-level and battalion/company-level unit information. Adjusted odds ratios (ORs) for age and other confounders were calculated using a logistic regression model. Results: The prevalence of all self-reported diseases showed monotonically increasing trends as the levels of perceived self-reported exposure increased. The ORs for colon cancer (OR, 1.13), leukemia (OR, 1.56), hypertension (OR, 1.03), peripheral vasculopathy (OR, 1.07), enterocolitis (OR, 1.07), peripheral neuropathy (OR, 1.07), multiple nerve palsy (OR, 1.14), multiple sclerosis (OR, 1.24), skin diseases (OR, 1.05), psychotic diseases (OR, 1.07) and lipidemia (OR, 1.05) were significantly elevated for the high exposure group in the division/brigade-level proximity-based exposure analysis, compared to the low exposure group. The ORs for cerebral infarction (OR, 1.08), chronic bronchitis (OR, 1.05), multiple nerve palsy (OR, 1.07), multiple sclerosis (OR, 1.16), skin diseases (OR, 1.05), and lipidemia (OR, 1.05) were significantly elevated for the high exposure group in the battalion/company- level analysis. Conclusions: Korean Vietnam veterans with high exposure to Agent Orange experienced a higher prevalence of several self-reported chronic diseases compared to those with low exposure by proximity-based exposure assessment. The strong positive associations between perceived self-reported exposure and all self-reported diseases should be evaluated with discretion because the likelihood of reporting diseases was directly related to the perceived intensity of Agent Orange exposure. Copyright © 2013 The Korean Society for Preventive Medicine. Source


Lee Y.-K.,Seoul National University | Ha Y.-C.,Chung - Ang University | Park C.,Health Insurance Review and Assessment Service | Koo K.-H.,Seoul National University
Journal of Arthroplasty | Year: 2013

We evaluated current trends of surgical treatment, such as internal fixation and hip arthroplasty, in femoral neck fracture. We assessed annual proportion of the each procedure in patients aged 50. years or more from 2006 to 2011, using the data of Health Insurance Review and Assessment Service (HIRA), which is a national claim registry. The proportion of hip arthroplasty increased while that of internal fixation decreased annually during the 5. years. The proportion of total hip arthroplasty increased in patients aged ≤ 65 years, and that of hemiarthroplasty increased in patients aged ≥ 65 years. The proportional increase of hip arthroplasty seemed to conform to the recent evidence regarding the outcomes of surgical treatments for the femoral neck fracture. © 2013 Elsevier Inc. Source

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