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  • 1. Ehrentraut, Claudia
    et al.
    Ekholm, Markus
    KTH.
    Tanushi, Hideyuki
    Tiedemann, Jörg
    Dalianis, Hercules
    Detecting hospital-acquired infections: A document classification approach using support vector machines and gradient tree boosting2018In: Health Informatics Journal, ISSN 1460-4582, E-ISSN 1741-2811, Vol. 24, no 1, p. 24-42Article in journal (Refereed)
    Abstract [en]

    Hospital-acquired infections pose a significant risk to patient health, while their surveillance is an additional workload for hospital staff. Our overall aim is to build a surveillance system that reliably detects all patient records that potentially include hospital-acquired infections. This is to reduce the burden of having the hospital staff manually check patient records. This study focuses on the application of text classification using support vector machines and gradient tree boosting to the problem. Support vector machines and gradient tree boosting have never been applied to the problem of detecting hospital-acquired infections in Swedish patient records, and according to our experiments, they lead to encouraging results. The best result is yielded by gradient tree boosting, at 93.7percent recall, 79.7percent precision and 85.7percent F1 score when using stemming. We can show that simple preprocessing techniques and parameter tuning can lead to high recall (which we aim for in screening patient records) with appropriate precision for this task.

  • 2. Perjons, E.
    et al.
    Wangler, B.
    Wäyrynen, Jaana
    KTH, School of Information and Communication Technology (ICT), Computer and Systems Sciences, DSV.
    Åhlfeldt, R.-M.
    Introducing a process manager in healthcare: An experience report2005In: Health Informatics Journal, ISSN 1460-4582, E-ISSN 1741-2811, Vol. 11, no 1, p. 45-61Article in journal (Refereed)
    Abstract [en]

    To be efficient and patient focused, healthcare units need to be process oriented and integrated with the processes and IT systems of other healthcare units. A process manager facilitates integration of different systems by using graphical and executable process models. The process manager also communicates directly with healthcare personnel via desktop computers and mobile devices. This article reports on a Swedish project where a prototype system was developed and tested with several healthcare units. The experience shows several advantages and opportunities. For example, current information about patients can be transferred automatically between healthcare units; resource intensive manual tasks can be replaced with automated tasks; and long-term process monitoring and quality assessment can be enabled. However, introducing a process manager requires attention to issues of security, ethics and legality. Healthcare units may also show differences in security awareness and IT maturity, which could obstruct the introduction of a process manager.

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