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Advanced algorithms of motion estimation for an elder at living room using Principal Component Analysis.

Duckchan SEO ; Sun K YOO ; Kuiwon CHOI ; Dongkeun KIM ; Jungchae KIM

Journal of Korean Society of Medical Informatics.2007;13(3):299-308.

OBJECTIVE: Development of telemedicine for an elder has been an important research area in an aging society, and effective Personal Emergency Response System(PERS) can provide exact medical decision and prompt treatment under emergency conditions. Previous studies have been focused on adapting troublesome sensors or passive calling system to monitor the old in their house. However, these previous systems might have limited applications due to its difficulties in usage and restraints in their daily activities, especially in the emergency. METHODS: In this study, the real time algorithms using surveillance camera was developed to monitor their pose change, such as emergency and falling motion. To estimate the motion of elder people, this research use a ratio of eigenvectors of the Principal Component Analysis (PCA) technique. RESULTS: In this system, no additional motion sensors or devices were applied to the object and it can be automatically controlled and monitor the old from a distance. It was found that this system can successfully monitor the old in living room regardless of surveillance camera angles and a silhouette size depending camera distance as using image processing and PCA. CONCLUSION: This algorithm was validated by experiments in a living room and this technique can be applicable to home monitoring and further applications.
Aging ; Emergencies ; Humans ; Passive Cutaneous Anaphylaxis ; Principal Component Analysis* ; Telemedicine

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Development of a Web-Based Multimedia Health Service System for Maternal Health Management.

Jeong Yee BAE

Journal of Korean Society of Medical Informatics.2007;13(3):285-297.

OBJECTIVE: The purpose of this study was to develop a web-based multimedia heath information system for maternal health care using principles of user-centered design. METHODS: Research process includes needs assessment, needs analysis, design, development/testing, and application release. Research methods for needs assessment included literature review, interviews, focus groups, and surveys. RESULTS: Based on the user's needs studies, this information service system contains an introduction, pregnancy test, fetal assessment, maternal and fetal development during pregnancy, maternal self-care methods, complications of pregnancy, complications of postpartum period, information for parenting, father's page, self-help group, FAQ, counseling and hyperlinked on Internet sites of resources pages. The web site was released using the URL: http://www.baejy.com/im. CONCLUSION: Through this health information system, clients can obtain information on maternal and baby care such as maternity care guidelines, daily instructions for families. This system will be a new way of nursing intervention and contribute to the maternal health promotion.
Counseling ; Female ; Fetal Development ; Focus Groups ; Health Information Systems ; Health Services* ; Humans ; Information Services ; Information Systems ; Internet ; Maternal Health Services ; Maternal Health* ; Multimedia* ; Needs Assessment ; Nursing ; Parenting ; Parents ; Postpartum Period ; Pregnancy ; Pregnancy Tests ; Self Care ; Self-Help Groups ; Women's Health

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The Business Analysis on the Chronic Disease Management in PublicHealth Centers for the Electronic Health Records System.

Kyung Hee PARK ; Eun Jung OH ; Jin Sun KIM ; Sun Hee CHO ; Sung Hee PARK ; Jong Min KIM ; Jeong Wook SEO

Journal of Korean Society of Medical Informatics.2007;13(3):279-284.

OBJECTIVE: This study analyzes the chronic disease management, which is a core business of the public health centers, and grasps the functions of the information system that users need. METHODS: It is conducted by analyzing work flows in two public health centers that using two different health information systems, Posdata system and Daeryun systems. We also performed detailed interview and discussion to formulate the functionality for the information system in the future. RESULTS: Both two health information systems currently used at public health centers emphasized hypertension, diabetes mellitus and hyperlipidemia as major target disease. They used information systems as a tool of case registration, assessment, reporting, consultation and education and patient care. But functionality of current systems supports only a part of the whole system and manual data input using excel program was still applied. The current information system is just inputting the data of manual works in computer and many of the functions are not used and still there are many duplicate and manual works. Two major problems of information systems in Korean public health centers are lack of standardization in the business process and reporting, and the current system does not support current functionalities. CONCLUSION: We found that management of the chronic disease is to be more important work for the public health centers in the future. The future direction of the work process of the management of chronic disease would be upgrading the current functionality as well as new functionalities. Better linkage with direct care system and interoperability with national electronic health records system are new demands.
Chronic Disease* ; Commerce* ; Diabetes Mellitus ; Education ; Electronic Health Records* ; Hand Strength ; Health Information Systems ; Hyperlipidemias ; Hypertension ; Information Systems ; Medical Records Systems, Computerized ; Patient Care ; Public Health ; United States Public Health Service ; Workflow

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Decision Tree Approach Characterizing the Non-Examinees of Health Screening Services.

Ae Kyung LEE ; Il Su PARK ; Sun Mi LEE

Journal of Korean Society of Medical Informatics.2007;13(3):271-278.

OBJECTIVE: The purpose of this study was to develop the decision tree models to classify the characteristics of those who had not undergone the health screening tests provided by the National Health Insurance Corporation. METHODS: Total of 5,102,761 subjects of health screening services in the year of 2002 was used. The data was divided into two data-sets (disease VS. non-disease group). The target variable was whether they took the health screening services. The number of input variables was 25 in total. RESULTS: The decision trees were classified into fourteen different types of non-examinees in the non-disease group and nineteen in the disease group. The ROC curve areas in the non-disease and disease groups were .761 and .714, respectively. CONCLUSION: The different types of non-examinees classified by the decision tree models would facilitate the foundation for the further analysis of individual characteristics and the effective health screening service management in future.
Data Mining ; Decision Trees* ; Mass Screening* ; National Health Programs ; ROC Curve

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Approach to the Requirements of a Decision Support System for Hypertension Management in a Health Center.

In Sook CHO ; Ji Hyun KIM ; Eun Jung LEE ; So Young KIM ; Jae Ho LEE ; Yoon KIM

Journal of Korean Society of Medical Informatics.2007;13(3):259-269.

BACKGROUND: Guidelines and protocols have gained support as vehicles for promulgating the best practices in clinical medicine, and many researchers have proposed frameworks for modeling them in a computer-interpretable format. However, for guidelines to be most useful for decision support, they need to be integrated into the patient care process and to be patient-specific. OBJECTIVE: To achieve this, as a part of the development of interoperable and sharable clinical decision support system in the context of electronic health records, we identified the system requirements on the CDS for integrating hypertension management into workflow of a health center. We also introduced our approach to the acquisition of medical knowledge. METHODS: A method combining the top-down and bottom-up approaches was used. For the top-down, the service scope and target group of patients were defined, and the knowledge sources, including JNC 7 and other guidelines from which decision logic was extracted, were identified. For the bottom-up approach, scenario-use cases were applied and an analysis of care data and a survey of the care providers were conducted. RESULTS: This bidirectional method revealed the opportunities of our approach and the means by which improvements can be suggested in practice. The content and functions expected by users were also identified. These results will be used for further encoding knowledge at the computable level and application development at the implemental level.
Clinical Medicine ; Electronic Health Records ; Humans ; Hypertension* ; Logic ; Patient Care ; Practice Guidelines as Topic

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Personal Privacy Protection of Electronic Medical Record in Health Information System.

Dong Myung KIM ; Baeg Weon HONG

Journal of Korean Society of Medical Informatics.2007;13(3):249-257.

OBJECTIVE: The consolidation of health information has led to the creation of a national network of medical institutions. In this wireless and hard-line communication web, patients' medical information, which is extremely private and must be kept in secret, may leak out, and the risk of dangers such as privacy infringement and misuse of information has increased. METHODS: For this dissertation, a patient information protection algorithm was designed for a hospital information system in order to improve the untraceability and anonymity of patients' individual information in a ubiquitous computing environment. RESULTS: Additionally, analyzing the computing load showed that the computing load of the entire system did not increase, and since 57 percent of the sensor node's computing load was transferred to the secure server, the sensor node's load was minimized. Thus, the system can also be applied to low performance sensor networks. CONCLUSION: In conclusion, improving the security level of identification information transmissions while minimizing the computing and communication load of sensor nodes in a ubiquitous computing environment did not lead to an increase in the system's overall computing or communication load. Thus, a system with improved security features for identification information and communication information was developed and established.
Anonyms and Pseudonyms ; Computer Security ; Electronic Health Records* ; Health Information Systems* ; Hospital Information Systems ; Humans ; Privacy*

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Strategic Approach for Standardization on Ubiqitous Healthcare System.

Hyeoun Ae PARK ; In Sook CHO

Journal of Korean Society of Medical Informatics.2007;13(3):237-248.

BACKGROUND: As ubiquitous computing is being introduced in the health care sector due to increase in elderly population and chronic patients, development in sensoring and wireless communication technologies, information technology infrastructure and computerization of health care facilities, the concept of ubiquitous health is also being introduced. In order to vitalize and spread the ubiqiutous health, standardization of related information technology must be preceded anything else. OBJECTIVE: The objective of this study is to review status of standaridization and standard adoption in domestic and international ubiquitous health care, and propose scope of standardization, a list of nessessary standards, and strategic approaches to develop standards based on the review. METHODS: We reviewed components of ubiquitous health care system, scope of standardization in technology, application cases, and status of standard aoption based on literature search. Status of standardization of related information technology in health care domain was reviewed by domestic and international activities of related standard development organizations. Based on these review results, scope of standardization and strategic approaches to develop standards for the domestic ubiquitous health were developed and modified after consultation of expert panel. RESULTS: Status of health care information standardization is in the early stage and information technology for ubiquitous health is in the exploratory stage in Korea. Accrodingly, it is proposed to develop standards for computerization of health care facilities, health information exchange, point-of-care bio-signal measurement, smart cards, and sensor technology in order by taking different approaches such as adopt or adapt international standards or develop domestic standards and introduce them as international standards according to possession of corresponding technology by domestic vendors and maturity of dometic vendors.
Aged ; Commerce ; Delivery of Health Care* ; Health Care Sector ; Health Facilities ; Humans ; Korea

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Development of Standardized and Competency-Based Curriculum in Nursing Informatics.

Young Hee YOM ; Jeong Eun KIM ; Byung Chul CHUN ; Sungwoo CHOI ; Duk Ho WHANG ; Kyung Mo PARK ; Young Sung LEE

Journal of Korean Society of Medical Informatics.2007;13(3):227-236.

OBJECTIVE: The purposes of this study were to analyze the current status of nursing informatics course and to develop the standardized curriculum in nursing informatics course based on competency. METHODS: Data were collected through two phases. In the first phase, a survey was conducted on 115 nursing institutions to analyze the current status of nursing informatics course. In the second phase, two-round delphi technique was developed to determine the priority and relative weight of contents in nursing informatics course. Final samples composed of both 43 nursing institutions and 11 nursing informatics experts. RESULTS: Out of 43 nursing schools, 13 nursing schools offered nursing informatics course. Nursing informatics was taught mostly to the second year and had 2 credits. About 54% of respondents disagreed that nursing informatics should be included in the license examination for Registered Nurse. The subject matrix by priority and relative weight and a standardized curriculum for nursing informatics were developed. CONCLUSION: Continuous application and revision of nursing informatics curriculum should be needed.
Competency-Based Education ; Curriculum* ; Surveys and Questionnaires ; Delphi Technique ; Licensure ; Nursing Informatics* ; Nursing* ; Schools, Nursing

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Development of Interactive Multimedia Learning in Aging Education.

Myonghwa PARK

Journal of Korean Society of Medical Informatics.2007;13(3):221-226.

OBJECTIVE: The purpose of this study was to develop and apply a web-based interactive multimedia instruction in aging education for college students. METHODS: The development of the program involved the coordinated actions of the researcher as a content expert and a multimedia designer responsible for animation, simulation, and game production. An adaptation of the model for developing interactive multimedia, described by Ribbons(1998), was used to guide program construction: Analysis - Planning - Design - Production - Operation - Evaluation phase. RESULTS: The interactive multimedia program was entitled as virtual aging and composed of a total of 8 interactive multimedia lessons. Interactive learning activities consisted of simulations, games, as well as online pedigree and life timeline drawing to facilitate the cognitive and emotional interactional learning of aging process. CONCLUSION: Interactive multimedia could be an effective teaching media of aging education and be used in a variety of learners including health care professionals caring for older adults as well as lay persons.
Adult ; Aging* ; Delivery of Health Care ; Education* ; Humans ; Learning* ; Multimedia* ; Pedigree

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Survey on the consumer preference for the internet health information of the patients' online community members.

Seong Hee JEONG ; Jeongeun KIM ; Taeyoon KIM ; Sunyoung PARK ; Younjoo SHIN ; Sunyoung LEE

Journal of Korean Society of Medical Informatics.2007;13(3):207-220.

OBJECTIVE: This study was carried out to obtain basic data required to plan and develop consumer-centered internet health information site for Korean population. METHODS: An internet survey was conducted on 5 internet patient community sites between 23 January and 5 February, 2007. A total of 958 surveys were completed and included in the study. Data were analyzed with descriptive analysis, Pearson's correlation analysis, and stepwise logistic regression analysis using SPSS version 12.0. RESULTS: According to our logistic regression analysis, the more internet usage, foreign country residents, members of breast cancer internet community, any workers except sales, and higher level of necessity/usefulness/reliability showed a higher Odds ratio for frequency of internet health information usage. Educational status, frequency of using internet, importance, necessity, usefulness, reliability of internet health information (p<.001), income, and satisfaction of internet health information (p<.05) were statistically significant in the frequency of internet health information usage. CONCLUSION: Above characteristics should be considered for planning to develop consumer-centered internet health information portals.
Breast Neoplasms ; Commerce ; Consumer Health Information ; Consumer Satisfaction* ; Educational Status ; Humans ; Internet* ; Logistic Models ; Odds Ratio

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