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데이터마이닝 기법을 이용한 효율적인 DRG 확인심사대상건 검색방법
이중규,조민우,박기동,이무송,이상일,김창엽,김용익,홍두호,Lee, Jung-Kyu,Jo, Min-Woo,Park, Ki-Dong,Lee, Moo-Song,Lee, Sang-Il,Kim, Chang-Yup,Kim, Yong-Ik,Hong, Du-Ho 대한예방의학회 2003 Journal of Preventive Medicine and Public Health Vol.36 No.2
Objectives : To develop a Diagnosis-Related Group (DRG) fraud candidate detection method, using data mining techniques, and to examine the efficiency of the developed method. Methods ; The Study included 79,790 DRGs and their related claims of 8 disease groups (Lens procedures, with or without, vitrectomy, tonsillectomy and/or adenoidectomy only, appendectomy, Cesarean section, vaginal delivery, anal and/or perianal procedures, inguinal and/or femoral hernia procedures, uterine and/or adnexa procedures for nonmalignancy), which were examined manually during a 32 months period. To construct an optimal prediction model, 38 variables were applied, and the correction rate and lift value of 3 models (decision tree, logistic regression, neural network) compared. The analyses were peformed separately by disease group. Results : The correction rates of the developed method, using data mining techniques, were 15.4 to 81.9%, according to disease groups, with an overall correction rate of 60.7%. The lift values were 1.9 to 7.3 according to disease groups, with an overall lift value of 4.1. Conclusions : The above findings suggested that the applying of data mining techniques is necessary to improve the efficiency of DRG fraud candidate detection.
열방성 액정고분자 강화 PBT의 기계적 및 유변학적 특성
이중규,김성훈 한국섬유공학회 1997 한국섬유공학회지 Vol.34 No.12
Blends of poly(butylene terephthalate) (PBT) and thermotropic liquid crystalline polymer (LCP) containing 60 mol% p-hydroxybenzoic acid and 40 mol% poly(ethylene terephthalate) were investigated in terms of mechanical, morphological and rheological properties. Mechanical property of PBT/LCP blends was affected by their compositions and fibril formations. Tensile and impact strengths of the PBT/LCP (95/5) blend were one and half times higher than those of PBT itself. Improvement of mechanical properties was obtained by LCP reinforcing effect in the PBT matrix with excellent dispersity and with partial miscibility between PBT/LCP as observed by Scanning Electron Microscope (SEM). Fracture surface of the injection molded samples showed that the LCP formed finely dispersed spherical domains in the PBT matrix, and the LCP domains were the larger spherical droplet with increasing LCP content. However, PBT/LCP (95/5) blend showed tHe smallest LCP droplets in the whole compositions. Addition of 5~10 wt% of LCP slightly increased the melt viscosity of PBT/LCP blends. However, above 10 wt% of LCP content effectively affected a reducing melt viscosity of the PBT/LCP blends, and sharp shear thinning was shown at high shear rate.
국민건강면접조사를 이용한 한국인의 DALE (Disability-Adjusted Life Expectancy)에 관한 연구
이중규,도영경,윤석준,김창엽,김용익,신영수,권영훈,Lee, Jung-Kyu,Do, Young-Kyung,Yoon, Seok-Jun,Kim, Chang-Yup,Kim, Yong-Ik,Shin, Young-Soo,Kwon, Young-Hoon 대한예방의학회 2002 Journal of Preventive Medicine and Public Health Vol.35 No.4
Objectives : To measure DALE (Disability-Adjusted Life Expectancy) in Korea to find out how long Koreans live in a state of full heath. Methods : DALE was calculated using the life table of 1999 and the disability prevalence from the National Health Interview Survey (NHIS), which was conducted with a sample of 13,523 households in 1998. The disability prevalence was measured using the annual prevalence of the long-term limitation of activities, which were divided into classes 1, 2, 3, 4, 5 and 6 according to the severity of the limitation. The disability weights were measured for each 6 class by conducting a survey of 16 healthcare professionals. The severity-adjusted disability prevalence was calculated by multiplying the disability prevalence of each class by the disability weights respectively. Healthy life years lost due to disability was calculated by multiplying the life expectancy by the severity-adjusted disability prevalence. Finally DALE was measured as the life expectancy minus healthy life years lost due to disability. Results : DALE for 1999, which refers to the expectation of equivalent years of good health, were 72.5, 69.5 and 75.3 years, for total, for males and for females, respectively. The percentages for DALE out of the life expectancy were 95.8, 96.6 and 94.4% for total, for males and for females, respectively. Conclusions : DALE is a newly developed indicator, which could effectively show the healthy life expectancy of populations. A greater notice and use of DALE would be expected as life expectancies increase and the quality of life changes in Korea.
이중규 대한치과이식임플란트학회 2006 The Korean Academy of Implant Dentistry Vol.25 No.2
The purpose of this article is to find alternative donor site for oral and maxillofacial bone defect. Autogenous cancellous bone is gold standard of bone graft materials. Anterior iliac crest is first choice to get autugenous cancellous bone. But it has some problems. For example, gate problem, large scar formation, and limitation of ambulation, etc. Bone harvesting from proximal tibia is simple and non-aggressive method to get autogenous cancellous bone. We had three cases of tibial bone graft, and we can get 8-17cc of cancellous bone. Patients can work immediate after surgery by their own feet, and had minimal discomfort and gate disturbance. If surgeon want sufficient amount of biologically highly valuable cancellous bone, proximal tibia could be one of the excellent donor site.