Publications

958 Publications visible to you, out of a total of 958

Abstract (Expand)

BACKGROUND: Analysis of clinical studies often necessitates multiple graphical representations of the results. Many professional software packages are available for this purpose. Most packages are either only commercially available or hard to use especially if one aims to generate or customize a huge number of similar graphical outputs. We developed a new, freely available software tool called KMWin (Kaplan-Meier for Windows) facilitating Kaplan-Meier survival time analysis. KMWin is based on the statistical software environment R and provides an easy to use graphical interface. Survival time data can be supplied as SPSS (sav), SAS export (xpt) or text file (dat), which is also a common export format of other applications such as Excel. Figures can directly be exported in any graphical file format supported by R. RESULTS: On the basis of a working example, we demonstrate how to use KMWin and present its main functions. We show how to control the interface, customize the graphical output, and analyse survival time data. A number of comparisons are performed between KMWin and SPSS regarding graphical output, statistical output, data management and development. Although the general functionality of SPSS is larger, KMWin comprises a number of features useful for survival time analysis in clinical trials and other applications. These are for example number of cases and number of cases under risk within the figure or provision of a queue system for repetitive analyses of updated data sets. Moreover, major adjustments of graphical settings can be performed easily on a single window. CONCLUSIONS: We conclude that our tool is well suited and convenient for repetitive analyses of survival time data. It can be used by non-statisticians and provides often used functions as well as functions which are not supplied by standard software packages. The software is routinely applied in several clinical study groups.

Authors: A. Gross, M. Ziepert, M. Scholz

Date Published: 23rd Jun 2012

Publication Type: Not specified

Abstract (Expand)

We report on a prospective, prolective observational study, supplying information on how physicians and other health care professionals retrieve medical knowledge on-line within the Heidelberg University Hospital information system. Within this hospital information system, on-line access to medical knowledge has been realised by installing a medical knowledge server in the range of about 24 GB and by providing access to it by health care professional workstations in wards, physicians’ rooms, etc. During the study, we observed about 96 accesses per working day. The main group of health care professionals retrieving medical knowledge were physicians and medical students. Primary reasons for its utilisation were identified as support for the users’ scientific work (50%), own clinical cases (19%), general medical problems (14%) and current clinical problems (13%). Health care professionals had accesses to medical knowledge bases such as MEDLINE (79%), drug bases (’Rote Liste’, 6%), and to electronic text books and knowledge base systems as well. Sixty-five percent of accesses to medical knowledge were judged to be successful. In our opinion, medical knowledge retrieval can serve as a first step towards knowledge processing in medicine. We point out the consequences for the management of hospital information systems in order to provide the prerequisites for such a type of knowledge retrieval.

Authors: Reinhold Haux, W. Grothe, M. Runkel, H. K. Schackert, H. J. Windeler, Alfred Winter, R. Wirtz, C. Herfarth, S. Kunze

Date Published: 1996

Publication Type: Journal article

Abstract

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Authors: A. Lagemann, B. Budig, W. Grothe, Reinhold Haux, J. Pilz, R. Sawinski, R. Werner, Alfred Winter

Date Published: 19

Publication Type: Misc

Abstract (Expand)

Einleitung: An der Universität Leipzig wird die Studienrichtung Medizinische Informatik als Schwerpunkt im Studiengang Informatik in Kooperation von Medizinischer Fakultät und der Fakultät für Mathematik und Informatik angeboten. Den Studierenden wird in diesem interdisziplinären[zum vollständigen Text gelangen Sie über die oben angegebene URL]

Authors: Sebastian Stäubert, Matthias Löbe, Franziska Jahn, Michael Schaaf, Alfred Winter

Date Published: 2015

Publication Type: Misc

Abstract

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Authors: A. Lagemann, W. Grothe, Reinhold Haux, J. Pilz, R. Sawinski, R. Werner, Alfred Winter

Date Published: 1994

Publication Type: InCollection

Abstract

Not specified

Authors: Heiko Niemann, Wilhelm Hasselbring, Thomas Wendt, Alfred Winter, Matthias Meierhofer

Date Published: 2002

Publication Type: Journal article

Abstract

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Authors: Reinhold Haux, Alfred Winter

Date Published: 28

Publication Type: Misc

Abstract

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Authors: Reinhold Haux, Alfred Winter

Date Published: 24

Publication Type: Misc

Abstract

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Authors: Alfred Winter, Elske Ammenwerth, Birgit Brigl, Reinhold Haux

Date Published: 2002

Publication Type: InCollection

Abstract

Not specified

Authors: Reinhold Haux, Alfred Winter

Date Published: 1993

Publication Type: InCollection

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