1.A Systematic Review of the Economic Evaluation of Telemedicine in Japan.
Miki AKIYAMA ; Byung Kwang YOO
Journal of Preventive Medicine and Public Health 2016;49(4):183-196
OBJECTIVES: There is no systematic review on economic evaluations of telemedicine in Japan, despite over 1000 trials implemented. Our systematic review aims to examine whether Japan's telemedicine is cost-saving or cost-effective, examine the methodological rigorousness of the economic evaluations, and discuss future studies needed to improve telemedicine's financial sustainability. METHODS: We searched five databases, including two Japanese databases, to find peer-reviewed articles published between January 1, 2000 and December 31, 2014 in English and Japanese that performed economic evaluations of Japan's telemedicine programs. The methodological rigorousness of the economic analyses was assessed with a well-established checklist. We calculated the benefit-to-cost ratio (BCR) when a reviewed study reported related data but did not report the BCR. All cost values were adjusted to 2014 US dollars. RESULTS: Among the 17 articles identified, six studies reported on settings connecting physicians for specialist consultations, and eleven studies on settings connecting healthcare providers and patients at home. There are three cost-benefit analyses and three cost-minimization analyses. The remaining studies measured the benefit of telemedicine only, using medical expenditure saved or users' willingness-to-pay. There was substantial diversity in the methodological rigorousness. Studies on teledermatology and teleradiology indicated a favorable level of economic efficiency. Studies on telehomecare gave mixed results. One cost-benefit analysis on telehomecare indicated a low economic efficiency, partly due to public subsidy rules, e.g., a too short budget period. CONCLUSIONS: Overall, telemedicine programs in Japan were indicated to have a favorable level of economic efficiency. However, the scarcity of the economic literature indicates the need for further rigorous economic evaluation studies.
Asian Continental Ancestry Group
;
Budgets
;
Checklist
;
Cost-Benefit Analysis*
;
Costs and Cost Analysis
;
Health Expenditures
;
Health Personnel
;
Humans
;
Japan*
;
Referral and Consultation
;
Specialization
;
Telemedicine*
;
Teleradiology
2.A Case of Miescher Syndrome with Insulin-Resistant Diabetes Mellitus.
Byung Min CHOI ; Jong Kwang LEE ; Kee Hwang YOO ; Joo Won LEE ; Soon Kyum KIM
Journal of the Korean Pediatric Society 1994;37(9):1292-1295
Miescher syndrome comprises congenital acanthosis nigricans, hypertrichosis, failure to thrive and short stature, dysmorphism especially of the jaws and oral cavity, insulin-resistant diabetes mellitus, and a characteristic general appearance. This report concerns a rare case of 12-year-old girl having insulin resistant diabetic mellitus with Miescher syndrome. The relevant literature was reviewed.
Acanthosis Nigricans
;
Child
;
Diabetes Mellitus*
;
Failure to Thrive
;
Female
;
Humans
;
Hypertrichosis
;
Insulin
;
Jaw
;
Mouth
3.Radiographic Measurement of Normal Adult Cervical Spinal Region in the Korean Population
Young LIM ; Hyun Duck YOO ; Sung Tai SHIN ; Byung Jik KIM ; Kwang Yoon SEO
The Journal of the Korean Orthopaedic Association 1987;22(1):159-162
Radiographic measurement of cervical spine is very important in cervical spine injury especially those without fracture. Authors measured the retropharyngeal space, retrotracheal space, lordortic curve and sagittal diameter of cervical spinal canal in 148 cases of normal adult male. The results are as follows: 1 . In normal Korean adult male maximum retropharyngeal space is 7mm in C, level and Smm in Cs level. Maximum retrotracheal space is 16mm in C, level. 3. Loss of normal lordotic curve is shown in 21 cases(14.2%), 4. Average sagittal diameter of C, level is 21.27mm-it's the largest of all the cervical spinal cana1s, and that of C, level is 16.15mm-it's the smallest.
Adult
;
Humans
;
Male
;
Spinal Canal
;
Spine
4.A Clinical Study of Anterior Interbody Fusion for Low Back Pain: Using an Effective Device , Reduction Spreader
Young LIM ; Hyun Duck YOO ; Byung Jik KIM ; Kwang Yoon SEO
The Journal of the Korean Orthopaedic Association 1987;22(4):923-931
There are many experiences and principles about posterior approach in the spine as surgical procedure in the treatment of the patients with low back pain. And the anterior approach to the disc with its excision and bone graft, less known to others, has become a relatively safe procedure with the increasing experience. The greatest advantage of anterior lumbar interbody fusion is that the reduction of lumbar vertebral slipping is possible, the distance between the involved bodies is well maintained and the rate of fusion increases by spreading the vertebral bodies and putting into the measured bone bloc especially in the patients with severe segmental instability or spondylolisthesis. We analysed 48 patients having anterior interbody fusion by using a specially designed reduction-spreader during eight years, from January 1.978 to December 1985. The results were as follows: 1. Among 48 cases, 20 cases were male and 28 cases were female; 12 cases were in the fourth decade and 19 cases were in the fifth decade-most common in the fifth decade. 2. 28 cases were at the level of L4–L5, 16 cases were L5–S1, and 4 cases were two levels(L3–L4 L4–L5 and L4–L5 LS–Sl). 3. Retroperitoneal approach was used for the L3–L4 and L4–L5, and transperitoneal approach was used for the L5–S1. 4. After distraction between the involved vertebral bodies using an effective device, reduction-sprea-der, a pair of full thickness iliac bone grafts were impacted into the interspace, maintaining the reduction after removal of the reduction-spreader. 5. Fusion was achieved between 3 months and 6 months in 46 cases except 2 cases. 6. Overall clinical results were as follows: good in 42 cases, fair in 6 cases. 7. The anterior interbody fusion using the reduction-spreader is found to be useful method in the treatment of low back pain with spinal instability diagnosed by lumbar flexion-extension lateral roentgenograms.
Clinical Study
;
Female
;
Humans
;
Low Back Pain
;
Male
;
Methods
;
Spine
;
Spondylolisthesis
;
Transplants
5.Effects of Kainic Acid-induced Seizures on c-fos Protein Expression in the Rat Hippocampus.
Kyung My YOO ; Kwang Soo KIM ; Moo Youn CHO ; Byung Chae PARK
Journal of the Korean Neurological Association 1996;14(1):102-113
C-fos protein is a gene regulatory third messenger involved in long-term responses of cells to various stimuli. Kainic acid(KA), a powerful excitatory analogue, induces seizures and damages the hippocampus and other limbic regions in rats. KA treatment induces c-fos protein production in the hippocampus. This study was undertaken to investigate the expression of c-fos protein in the hippocampus according to seizure stage induced by systemic injection of KA. Twenty-three adult male Sprague-Dawley rats experienced convulsions by a single intraperitoneal injection of convulsive dose (20-40 mg/Kg) of KA. Seven control rats received normal saline. Animals were sacrificed 3 hr after KA treatment. The expression of c-fos protein was tested in the hippocampus by immunohistochemical staining using polyclonal anti-Fos. Most of the rats exhibited limbic motor epileptic activity. C-fos protein immunoreactivity increased in the CA1, CA3 and dentate gyrus at stage 1-2, and not only in the CA1, CA3 and dentate gyrus but also in the CA4 at stage 3-4. At stage 5, c-fos protein immunoreactivity increased in all areas of the hippocampus. C-fos protein immunoreactivity increased progressively with increasing severity of convulsions. These results show that KA produces limbic motor seizure associated with a rise in the c-fos protein in the hippocampus, and that the expression of c-fos protein may has some relevance to the progressive and permanent brain changes occurring during epilepsy.
Adult
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Animals
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Brain
;
Dentate Gyrus
;
Epilepsy
;
Genes, vif
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Hippocampus*
;
Humans
;
Injections, Intraperitoneal
;
Male
;
Rats*
;
Rats, Sprague-Dawley
;
Seizures*
6.An analysis of repeat visitors in the psychiatric emergency room.
Doo Byung PARK ; Jae Kwang LEE ; Baik Seok KEE ; Young Sik YOO ; Kil Hong LEE ; Kyu Hang LEE
Journal of Korean Neuropsychiatric Association 1993;32(2):212-221
No abstract available.
Emergencies*
;
Emergency Service, Hospital*
7.How to Improve Influenza Vaccination Rates in the U.S..
Journal of Preventive Medicine and Public Health 2011;44(4):141-148
Annual epidemics of seasonal influenza occur during autumn and winter in temperate regions and have imposed substantial public health and economic burdens. At the global level, these epidemics cause about 3-5 million severe cases of illness and about 0.25-0.5 million deaths each year. Although annual vaccination is the most effective way to prevent the disease and its severe outcomes, influenza vaccination coverage rates have been at suboptimal levels in many countries. For instance, the coverage rates among the elderly in 20 developed nations in 2008 ranged from 21% to 78% (median 65%). In the U.S., influenza vaccination levels among elderly population appeared to reach a "plateau" of about 70% after the late 1990s, and levels among child populations have remained at less than 50%. In addition, disparities in the coverage rates across subpopulations within a country present another important public health issue. New approaches are needed for countries striving both to improve their overall coverage rates and to eliminate disparities. This review article aims to describe a broad conceptual framework of vaccination, and to illustrate four potential determinants of influenza vaccination based on empirical analyses of U.S. nationally representative populations. These determinants include the ongoing influenza epidemic level, mass media reporting on influenza-related topics, reimbursement rate for providers to administer influenza vaccination, and vaccine supply. It additionally proposes specific policy implications, derived from these empirical analyses, to improve the influenza vaccination coverage rate and associated disparities in the U.S., which could be generalizable to other countries.
Health Status Disparities
;
Humans
;
Influenza Vaccines/*administration & dosage
;
Influenza, Human/epidemiology/*prevention & control
;
Patient Acceptance of Health Care
;
United States/epidemiology
;
Vaccination/*trends/utilization
8.Role of Ras/ERK-dependent pathway in the erythroid differentiation of K562 cells.
Chi Dug KANG ; In Rok DO ; Kwang Woon KIM ; Byung Kwon AHN ; Sun Hee KIM ; Byung Seon CHUNG ; Byung Hak JHUN ; Mi Ae YOO
Experimental & Molecular Medicine 1999;31(2):76-82
The chronic myelogenous leukemic K562 cell line carrying Bcr-Abl tyrosine kinase is considered as pluripotent hematopoietic progenitor cells expressing markers for erythroid, granulocytic, monocytic, and megakaryocytic lineages. Here we investigated the signaling modulations required for induction of erythroid differentiation of K562 cells. When the K562 cells were treated with herbimycin A (an inhibitor of protein tyrosine kinase), ras antisense oligonucleotide, and PD98059 (a specific inhibitor of MEK), inhibition of ERK/MAPK activity and cell growth, and induction of erythroid differentiation were observed. The ras mutant, pZIPRas61leu-transfected cells, K562-Ras61leu, have shown a markedly decreased cell proliferation rate with approximately 2-fold doubling time, compared with the parental K562 cells, and about 60% of these cells have shown the phenotype of erythroid differentiation. In addition, herbimycin A inhibited the growth rate and increased the erythroid differentiation, but did not affect the elevated activity of ERK/MAPK in the K562-Ras61leu cells. On the other hand, effects of PD98059 on the growth and differentiation of K562-Ras61leu cells were biphasic. At low concentration of PD98059, which inhibited the elevated activity of ERK/MAPK to the level of parental cells, the growth rate increased and the erythroid differentiation decreased slightly, and at high concentration of PD98059, which inhibited the elevated activity of ERK/MAPK below that of the parental cells, the growth rate turned down and the erythroid differentiation was restored to the untreated control level. Taken together, these results suggest that an appropriate activity of ERK/MAPK is required to maintain the rapid growth and transformed phenotype of K562 cells.
Androstadienes/pharmacology
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Ca(2+)-Calmodulin Dependent Protein Kinase
;
Cell Differentiation/drug effects
;
Enzyme Inhibitors/pharmacology
;
Erythroid Progenitor Cells/physiology*
;
Erythroid Progenitor Cells/cytology
;
Erythropoiesis*
;
Flavones/pharmacology
;
Human
;
K562 Cells
;
Leukemia, Myeloid/pathology
;
Oligonucleotides, Antisense/pharmacology
;
Quinones/pharmacology
;
ras Proteins/metabolism*
9.Design of a medical image processing software for clinical-PACS.
Sun Kook YOO ; Kwang Min KIM ; Nam Hyun KIM ; Jae Man HUH ; Byung Chul CHANG ; Bum Koo CHO
Yonsei Medical Journal 1997;38(4):193-201
Software modules for interactive display, manipulation and retrieval of medical images have been designed for a Picture Archiving and Communications System (PACS). The target of these modules is not for a high-end diagnostic workstation for radiologists, but for a PC-based low cost clinical workstation for a referring physician. This software is constructed based on a concept of an object-oriented language which is designed to be modular and expandable. It consists of several functional modules: (a) a communication module for image retrieval, (b) a standard module for the interpretation of the DICOM images, (c) a user interface module for the non-computer oriented clinicians and (d) a tool module for viewing and manipulating images as well as editing the annotation.
Image Processing, Computer-Assisted/instrumentation*
;
Radiology Information Systems*
;
Software*
10.Recurrent Acute Pancreatitis in a Patient with Type IIb hyperlipoproteinemia: A Case Report and Review of the Literature in Korea.
Byung Kook KIM ; Mi Jin KIM ; Won Chul CHANG ; Kwang Ha YOO ; Young Goo SHIN ; Choon Hee CHUNG
Yonsei Medical Journal 2006;47(1):144-147
Hyperlipidemia is a rare cause of pancreatitis. It has been believed that free fatty acids released from hydrolyzed serum chylomicrons or triglycerides and chylomicrons induce hyperlipidemic pancreatitis by damaging acinar cells and capillaries. Type I, IV or V hyperlipidemic (Fredrickson's classification) pancreatitides have distinctive features of increased and heightened serum chylomicron and triglyceride levels. In contrast, type IIb hyperlipidemia usually doesn't have increased chylomicrons. It is a dominant inherited genetic disorder and doesn't manifest the subjective symptom before combining vascular complications such as coronary artery disease. Only a few cases of type IIb hyperlipidemic pancreatitis have been reported. We experienced a male patient with recurrent hyperlipidemic pancreatitis combined with type IIb hyperlipidemia. We present the case report and a review of the literature of hyperlipidemic pancreatitis, especially cases in Korea.
Tomography, X-Ray Computed
;
Recurrence
;
Pancreatitis/*etiology/radiography
;
Male
;
Korea/epidemiology
;
Hyperlipoproteinemia Type II/*complications/diagnosis/epidemiology
;
Humans
;
Adult