Abstract:
OBJECTIVES:To find discriminative combination of influential factors of Intracerebral hematoma (ICH) to cluster ICH patients with similar features to explore relationship among influential factors and 30-day mortality of ICH. METHODS:The data of ICH patients are collected. We use a decision tree to find discriminative combination of the influential factors. We cluster ICH patients with similar features using Fuzzy C-means algorithm (FCM) to construct a support vector machine (SVM) for each cluster to build a multi-SVM classifier. Finally, we designate each testing data into its appropriate cluster and apply the corresponding SVM classifier of the cluster to explore the relationship among impact factors and 30-day mortality. RESULTS:The two influential factors chosen to split the decision tree are Glasgow coma scale (GCS) score and Hematoma size. FCM algorithm finds three centroids, one for high danger group, one for middle danger group, and the other for low danger group. The proposed approach outperforms benchmark experiments without FCM algorithm to cluster training data. CONCLUSIONS:It is appropriate to construct a classifier for each cluster with similar features. The combination of factors with significant discrimination as input variables should outperform that with only single discriminative factor as input variable.
journal_name
Methods Inf Medjournal_title
Methods of information in medicineauthors
Chiu HC,Chiu DY,Lee YH,Wang CC,Wang CS,Lee CC,Ying MH,Wu MY,Chang WCdoi
10.3414/ME15-01-0137subject
Has Abstractpub_date
2016-10-17 00:00:00pages
450-454issue
5eissn
0026-1270issn
2511-705Xpii
15-01-0137journal_volume
55pub_type
杂志文章abstract:OBJECTIVES:To assess the relevance of various potential confounding factors (comorbidities, obesity, body position, ECG lead, respiratory event type and sleep stage) on the detectability of sleep-related breathing disorders from the ECG. METHODS:A set of 140 simultaneous recordings of polysomnograms and 8-channel Holt...
journal_title:Methods of information in medicine
pub_type: 杂志文章
doi:10.3414/ME17-02-0005
更新日期:2018-05-01 00:00:00
abstract::Although arterial mechanical properties have been evaluated using arterial input impedance, the relative difficulty in accurate flow measurement made the value of impedance somewhat limited. To develop an alternative method to evaluate arterial mechanical properties, we analyzed the aortic pressure (AoP)-radial arteri...
journal_title:Methods of information in medicine
pub_type: 杂志文章
doi:
更新日期:1997-12-01 00:00:00
abstract:OBJECTIVES:a) To present a regional health care communication system developed in the North Karelia Hospital District with the help of two EU funded information technology projects namely the TERVE project (1) which was implemented at the national level financed by the regional subsidy 6 of the ERDF and the CHIN projec...
journal_title:Methods of information in medicine
pub_type: 杂志文章
doi:
更新日期:2002-01-01 00:00:00
abstract:OBJECTIVES:Personal digital assistants (PDAs) are in widespread use by resident physicians in many countries, reaching as high as 95% in some reports. Uses are varied and include clinical decision support and support of evidence-based practice. Utilization by resident doctors in Japan has not been characterized. This s...
journal_title:Methods of information in medicine
pub_type: 杂志文章
doi:10.3414/ME0607
更新日期:2009-01-01 00:00:00
abstract::The graduates and students of the School of Health Information Science (HIS) at the University of Victoria (UVic) have pioneered the Canadian sphere in health informatics since 1982. After six years of growth this co-operative education program has matured and establishment of a research base and graduate school has b...
journal_title:Methods of information in medicine
pub_type: 杂志文章
doi:
更新日期:1989-11-01 00:00:00
abstract:OBJECTIVE:The purpose of this study was to investigate the effects of hybrid environments (i.e. where part of the patient record is paper-based and part of it is electronic) upon aspects of novice nurse information seeking (i.e. amount of information accessed, choice of key information sources, type of information and ...
journal_title:Methods of information in medicine
pub_type: 杂志文章
doi:10.3414/ME9222
更新日期:2009-01-01 00:00:00
abstract::HEALTH WATCH, a longitudinal prospective study of healthy aging, was designed to characterize a healthy population of 2,200 men and women, ages 20-80 years in 1970. Biochemical, hematological, and physiological tests are performed annually over three weekly visits, combined with a self-administered HEALTH WATCH questi...
journal_title:Methods of information in medicine
pub_type: 杂志文章
doi:
更新日期:1993-04-01 00:00:00
abstract::Psych Topix is a knowledge-based program which guides the clinician from an on-line clinical report to a search of the psychiatric literature or of other relevant databases. It provides this guidance by using an outline of key topics in a clinical field to provide "concept-based" links. Each topic is augmented with an...
journal_title:Methods of information in medicine
pub_type: 杂志文章
doi:
更新日期:1992-09-01 00:00:00
abstract::The increased use of computers is a response to the considerable growth in information in all fields of activities. Related to this, in the field of medicine a new component appeared about 40 years ago: Medical Informatics. Its goals are to assist health care professionals in the choice of data to manage and in the ch...
journal_title:Methods of information in medicine
pub_type: 杂志文章
doi:
更新日期:1997-02-01 00:00:00
abstract:OBJECTIVES:This paper addresses the design of a platform for the management of medical decision data in the ICU. Whenever new medical data from laboratories or monitors is available or at fixed times, the appropriate medical support services are activated and generate a medical alert or suggestion to the bedside termin...
journal_title:Methods of information in medicine
pub_type: 杂志文章
doi:10.3414/me0480
更新日期:2008-01-01 00:00:00
abstract:OBJECTIVES:Compiling individual records coming from different sources is necessary for multi-center studies. Legal aspects can be satisfied by implementing anonymization procedures. When using these procedures with a different key for each study it becomes almost impossible to link records from separate data collection...
journal_title:Methods of information in medicine
pub_type: 杂志文章
doi:10.3414/me0546
更新日期:2008-01-01 00:00:00
abstract:INTRODUCTION:This article is part of the focus theme of Methods of Information in Medicine on "Pervasive Intelligent Technologies for Health". BACKGROUND:This paper addresses the evaluation with hospital staff of an in-patient environment that supports patients, family, nursing staff and medical specialists during the...
journal_title:Methods of information in medicine
pub_type: 杂志文章
doi:10.3414/ME13-02-0032
更新日期:2014-01-01 00:00:00
abstract::The PHOENIX Radiology Consultant is a rule-based expert system which assists physicians in planning radiological work-up strategies. This article describes the methods used to create and validate the system's knowledge base. The feasibility and acceptability of PHOENIX were tested for two years in a clinical trial. Du...
journal_title:Methods of information in medicine
pub_type: 临床试验,杂志文章
doi:
更新日期:1991-10-01 00:00:00
abstract:OBJECTIVES:The objective of this work is to present the software tool ANTONIA, which has been developed to facilitate a quantitative analysis of perfusion-weighted MRI (PWI) datasets in general as well as the subsequent multi-parametric analysis of additional datasets for the specific purpose of acute ischemic stroke p...
journal_title:Methods of information in medicine
pub_type: 杂志文章
doi:10.3414/ME14-01-0007
更新日期:2014-01-01 00:00:00
abstract:OBJECTIVES:The traditional techniques of data analysis are often not sufficient to characterize the complex dynamics of respiration. In this study the respiratory pattern variability was analyzed using symbolic dynamics. METHODS:A group of 20 patients on weaning trials from mechanical ventilation were studied at two d...
journal_title:Methods of information in medicine
pub_type: 杂志文章
doi:
更新日期:2004-01-01 00:00:00
abstract:OBJECTIVES:To discuss the advantages and disadvantages of an interfaced approach to clinical information systems architecture. METHODS:After many years of internally building almost all components of a hospital clinical information system (HELP) at Intermountain Health Care, we changed our architectural approach as we...
journal_title:Methods of information in medicine
pub_type: 杂志文章
doi:
更新日期:2003-01-01 00:00:00
abstract::Often in drug trials only the objective, or the subjective responses of the subjects are investigated, depending on the kind of drug. It is, however, desirable to check both the objective and the subjective responses in every drug trial. The investigation of the objective symptoms which is especially necessary in psyc...
journal_title:Methods of information in medicine
pub_type: 杂志文章
doi:
更新日期:1963-01-01 00:00:00
abstract:OBJECTIVE:To explain the common conformance and interoperability testing requirements of eHealth applications through two case studies; one using a prominent eHealth messaging standard, namely HL7 v3 [1], and the other using Integrating the Healthcare Enterprise (IHE) [2] Profiles and to describe how these testing requ...
journal_title:Methods of information in medicine
pub_type: 杂志文章
doi:10.3414/ME09-02-0022
更新日期:2010-01-01 00:00:00
abstract::The Read Thesaurus is a comprehensive user-led clinical vocabulary developed from earlier, and structurally simpler, versions of the Read Codes, with substantial input from United Kingdom health care professionals. A constituent template table underpins a range of functions, including semantic definition of concepts u...
journal_title:Methods of information in medicine
pub_type: 杂志文章
doi:
更新日期:1998-11-01 00:00:00
abstract:OBJECTIVES:Benchmarking statements provide a mechanism for making academic standards explicit within a subject area. They allow comparisons between courses to be based on learning outcomes rather than by defining a curriculum. No such statement has been produced for informatics. In the absence of any established benchm...
journal_title:Methods of information in medicine
pub_type: 杂志文章,评审
doi:10.1160/me0442
更新日期:2007-01-01 00:00:00
abstract:OBJECTIVES:The authors' aim was to investigate the representations, wishes, and fears of family caregivers (FCs) regarding 14 innovative technologies (IT) for care aiding and burden alleviation, given the severe physical and psychological stress induced by dementia care, and the very slow uptake of these technologies i...
journal_title:Methods of information in medicine
pub_type: 杂志文章
doi:
更新日期:2008-01-01 00:00:00
abstract:OBJECTIVE:Information systems integration is hard, especially when semantic and business process interoperability requirements need to be met. To succeed, a unified methodology, approaching different aspects of systems architecture such as business, information, computational, engineering and technology viewpoints, has...
journal_title:Methods of information in medicine
pub_type: 杂志文章
doi:10.3414/ME09-02-0012
更新日期:2010-01-01 00:00:00
abstract::Construction of medical knowledge bases for use in expert systems is an arduous task. We propose a procedure for obtaining medical knowledge via automated analysis of citations found in the National Library of Medicine's MEDLINE database. In this method, simple pattern of keywords and subheading co-occurrences are det...
journal_title:Methods of information in medicine
pub_type: 杂志文章
doi:
更新日期:1993-04-01 00:00:00
abstract:OBJECTIVE:We have been developing a decision support system that uses electronic clinical data and provides alerts to clinicians. However, the inference rules for such a system are difficult to write in terms of representing domain concepts and temporal reasoning. To address this problem, we have developed an ontology-...
journal_title:Methods of information in medicine
pub_type: 杂志文章
doi:10.3414/ME9126
更新日期:2008-01-01 00:00:00
abstract::This paper is concerned with a comparison of two broad classes of mathematical models, additive and multiplicative, for selecting the best among a number of competing project proposals addressed to a defined research objective. The analysis is predicated on the view that, though additive models are widely utilized, th...
journal_title:Methods of information in medicine
pub_type: 杂志文章
doi:
更新日期:1989-07-01 00:00:00
abstract:OBJECTIVES:In this work, a cellular automaton software package for simulating different infectious diseases, storing the simulation results in a data warehouse system and analyzing the obtained results to generate prediction models as well as contingency plans, is proposed. The Brisbane H3N2 flu virus, which has been s...
journal_title:Methods of information in medicine
pub_type: 杂志文章
doi:10.3414/ME09-02-0025
更新日期:2010-01-01 00:00:00
abstract:OBJECTIVES:To discuss application areas of information technology in medicine and health care on the occasion of the opening of the Private Universität für Medizinische Informatik und Technik Tirol/University for Health Informatics and Technology Tyrol (UMIT) at Innsbruck, Tyrol, Austria. RESULTS AND CONCLUSIONS:Impor...
journal_title:Methods of information in medicine
pub_type:
doi:
更新日期:2002-01-01 00:00:00
abstract:OBJECTIVES:Biomedical ontologies exist to serve integration of clinical and experimental data, and it is critical to their success that they be put to widespread use in the annotation of data. How, then, can ontologies achieve the sort of user-friendliness, reliability, cost-effectiveness, and breadth of coverage that ...
journal_title:Methods of information in medicine
pub_type: 杂志文章
doi:10.3414/ME9302
更新日期:2010-01-01 00:00:00
abstract:BACKGROUND:For the statistical analysis of dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) data, compartment models are a commonly used tool. By these models, the observed uptake of contrast agent in some tissue over time is linked to physiologic properties like capillary permeability and blood flow. Up ...
journal_title:Methods of information in medicine
pub_type: 杂志文章
doi:10.3414/ME14-01-0131
更新日期:2016-01-01 00:00:00
abstract:OBJECTIVES:To contribute a new perspective on recent investigations into the scientific foundations of medical informatics (MI) and bioinformatics (BI). To support efforts that could generate synergies and new research directions. METHODS:MI and BI are compared and contrasted from a philosophy of science perspective. ...
journal_title:Methods of information in medicine
pub_type: 杂志文章
doi:
更新日期:2006-01-01 00:00:00