Title :
Predicting visualization of hospital clinical reports using survival analysis of access logs from a virtual patient record
Author :
Pereira Rodrigues, Pedro ; Dias, Claudia Camila ; Rocha, Diana ; Boldt, Isabel ; Teixeira-Pinto, Armando ; Cruz-Correia, Ricardo
Author_Institution :
LIAAD, INESC TEC, Portugal
Abstract :
The amount of data currently being produced, stored and used in hospital settings is stressing information technology infrastructure, making clinical reports to be stored in secondary memory devices. The aim of this work was to develop a model that predicts the probability of visualization, within a certain period after production, of each clinical report. We collected log data, from January 2013 till May 2011, from an existing virtual patient record, in a tertiary university hospital in Porto, Portugal, with information on report creation and report first-time visualization dates, along with contextual information. The main factors associated with visualization were defined using logistic regression. These factors were then used as explanatory variables for predicting the probability of a piece of information being accessed after production, using Kaplan-Meier analysis and the Weibull probability distribution. Clinical department, type of encounter and report type were found significantly associated with time-to-visualization and probability of visualization.
Keywords :
medical information systems; regression analysis; statistical distributions; Kaplan-Meier analysis; Porto; Portugal; Weibull probability distribution; access log data; clinical department; contextual information; hospital clinical report visualization; information technology infrastructure; logistic regression; report creation; report first-time visualization dates; secondary memory device; survival analysis; tertiary university hospital; virtual patient record; Data visualization; Hospitals; Information systems; Pathology; Predictive models; Production; Visualization;
Conference_Titel :
Computer-Based Medical Systems (CBMS), 2013 IEEE 26th International Symposium on
Conference_Location :
Porto
DOI :
10.1109/CBMS.2013.6627841