[Comparing performance of decision tree and neural network in predicting myocardial infarction]

Cardiovascular diseases are among the most common diseases in all societies. Using data mining techniques to generate predictive models to identify those at risk for reducing the effects of the disease is very helpful. The main purpose of this study was to predict the risk of myocardial infarction by Decision Tree based on the observed risk factors. The present work was an analytical study conducted on a database containing 350 records. Data were obtained from patients admitted to Shahid Rajaei specialized cardiovascular hospital, Iran, in 2011. Data were collected using a four-sectioned data collection form. Data analysis was performed using SPSS statistical software version 12 by CRISP methodology. In the modeling section decision tree and Neural Network were used. The results of the data mining showed that the variables of high blood pressure, hyperlipidemia and tobacco smoking were the most critical risk factors of myocardial infarction. The accuracy of the decision tree model on the data was shown to be as 93/4%. The best created model was decision tree C5.0. According to the created rules, it can be predicted which patient with new specified features may affected by myocardial infarction

[Human factors affecting the application of information technology by TUMS middle managers in 2010]

One of the most important reasons why organizations are distinguished from one another is the degree of application and implementation of information technology in their organizational activities. In this regard, individual factors contribute considerably to the application of information technology [IT]. Such factors include employees' perceptions and attitudes towards information technology and their demographic characteristics which affect the level of information technology acceptance and implementation. In this cross-sectional study, 110 middle managers from teaching hospitals of Tehran University of Medical Sciences [TUMS] were chosen. A structured questionnaire was used as the data collection device and its validity and reliability were confirmed by a pilot study. Of the participants, 62.9% were males and 37.1% were females. The findings show that there is a statistically significant relationship between perception and making decisions based on the implementation of information technology. However, there was no significant relationship between work experience, education and training on the one hand and IT implementation on the other. The results show that human factors [perception and decision] have a considerable impact on the implementation of information technology. Top managers and experts should consider the important aspects of human factors and also the factors affecting them

[ efficiency analysis of medical records departments of Tehran university of medical sciences hospitals with data envelopment analysis [2007-2009]]

Analysis of efficiency in hospitals, as the most expensive operating unit of the health system, is very important. This costly unit has several departments that one of them is medical records. This study is trying to analyze the efficiency of medical records department for the enhancement of using medical records facilities. In this study, technical, scale and managerial efficiency of medical records department has been studied by data envelopment analysis method, and assuming the scale efficiency variable and the input axis. Information used in this study was the input variables [number of technician personnel and lower and Master of Science personnel and higher], output variables [number of emergency and outpatient and inpatient medical records and the number of filing unit visitors to respond] during 2007-2009. The average technical efficiency of medical records departments is 84 percent, that indicates there is at least 16 percent capacity for an increase in performance. Average of management and scale Performance in units during the 3 years of study are 95 and 89 percent respectively. Most input surplus is relevant to technician and lower personnel. The average performance of these units in general hospitals is 80 percent and in specialized activities is 92 percent. Relationship between studied indicators in this study with performance medical records departments showed that using such as employee personnel with undergraduate degrees and higher and educated in medical records filed, the use of managers with enough experience in this department and more use of computer systems for unit activities can fill 16 percent capacity of performance improvement in these units

[ survey of clinical informations system process in general hospitals of Tehran university of medical sciences]

The benefits of a unique computerized medical records and communication equipments is utilized to collect, storage, process, extract and relate to patient care information and management information. If this utilization is in accordance with the needs of managers and staff of medical records, many of the nation's health system problems will be dissolved. Information systems in health supply system by compiling, analyzing and publishing data provide utilization of information improve the health of the society. The purpose of this study is to investigate the process of clinical information systems in general hospitals of Tehran University of Medical Sciences based on available clinical information system in these hospitals. This descriptive study is an application study that conducted in order to determine the process of clinical information system in general hospitals of Tehran University of Medical Sciences based on available clinical information in these hospitals. The required data have been collected by a valid and reliable questionnaire. Descriptive statistics were used to analyze data. With regard to the current condition and the importance of survey of the process of clinical information system in the studied hospitals, the authors provided the desired checklist in general hospitals with studying the related system in America, Australia and England countries, on the basis of country requirements in the form of clinical information system processes. We studied clinical information system processes in departments of admission, filling and retrieving, statistical and coding and also soft wares in this department. It is necessary to create a coordinated and integrated clinical information system with suitable process and empower experts in the field of proper use of data with regard to the position of information system in each organization and its fundamental role in the adoption of accurate policies. We found that relative frequency of clinical information system processes is more than 60% in this department and clinical information system elements was observed 75% in all the departments except admission

[Comparison of cardiovascular diseases classification system in selected countries with Iran]

Availability of an accurate information system in recording and analysis of medical findings obtained from patients with cardiovascular diseases plays a crucial role in fighting cardiovascular diseases. One of the most important approaches in collecting such information is the classification system of cardiovascular diseases. The main goal of this research was to provide effective strategies for establishing a national classification system for cardiovascular diseases in Iran through a comparative study of such national systems currently available in USA, Australia, Canada, and England. This was a descriptive-comparative study conducted during 2007-2008. The classification systems of cardiovascular diseases in USA, Australia, England and Canada were reviewed to provide an appropriate model for Iran. Data collection was performed through literature review, Internet and e-mails. Our findings showed that all selected countries benefit a national classification system for cardiovascular diseases. At present, the systems named as ICD-10-CM in USA, ICD-10-AM in Australia, Rcc in England, ICD-10-CA in Canada, and ICD-10 in Iran are in use. This research attempted to discuss the advantages and the constraints of each system mentioned earlier. Considering our domestic needs, policies and health system priorities, establishing a national classification system for cardiovascular diseases seems to be necessary

[Health services accreditation standards for information management in Canada, New Zealand and USA: a comparative study]

Accreditation and evaluation play a critical role in quality management. In this regards health records are among the primary documents used by health care facilities to evaluate compliance with the standards set by accreditation agencies. To compare the strengths, weaknesses, and the general functionality of IM standards of three well-established accreditation agencies in Canada, USA and New Zealand. This was a comparative-descriptive study in which the IM standards of Canada, USA and New Zealand were collected and investigated through the internet and e-mails during 2003-2004. The data indicated that the JCAHO has adopted maximum standards related to patients-specific information. The data also described that the CCHSA has regarded the most complete and suitable standards related to educational and staff development standards. Considering other data, the maximum standards related to achieving positive outcomes and making improvement has been adopted by the CCHSA and QHNZ. All together, the findings of this comparative study revealed that while the CCHSA and QHNZ have adopted the same standards with emphasis on information management planning standards and achieving positive outcomes, the strong points of JCAHO's standards are specific information and evidence-based decision making

[Comparative study of natural disaster health information system in U.S.A, Japan and Iran]

Development of an integrated health information system in order to prioritization of needs, sources devoting, diseases surveillance; detecting and early responding is very important. Therefore, this comparative study has been done about natural disaster health information systems in Iran, Japan, and U.S.A in 2005. The aim is to provide logical proposes to reinforce for developing the Iranian natural disaster health information system. This is a descriptive and comparative study that was accomplished in form of cross sectional survey. The data was extracted from literature, papers, Iranian and foreigner journals, e-mails and other related document. Natural disaster health information system in U.S.A illustrates that there is integration and consistency between responsibilities and roles are played between involving organizations and entities. The required data for natural disaster health information system collected through National Electronic Disease Surveillance System, Pulse Net, Bio Watch, Bio Net, Syndromic Surveillance System, and "the American Red Cross-Centers for Disease Control and Prevention health Impact Surveillance System" in U.S.A and Early Estimation System and Emergency Measures Support System in Japan and Diseases Surveillance in Iran. However, in spite of U.S.A and Japan there is no classification system in Iran. According to the results, Iranian natural disaster health information system can be improved by using of different data gathering methods, systems and soft wares, also applying of geographical information system and establishing health and natural disaster network and using of classification of diseases advised to upgrade natural disaster health information system for Iran