Linking ambulance, emergency department and hospital admissions data: understanding the emergency journey

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Title Linking ambulance, emergency department and hospital admissions data: understanding the emergency journey
Author Crilly, Julia Louise; O'Dwyer, John A; O'Dwyer, Marilla A; Lind, James Frederick; Peters, Julia A L; Tippett, Vivienne C; Wallis, Marianne; Bost, Nerolie Fiona; Keijzers, Gerben B
Journal Name Medical Journal of Australia
Year Published 2011
Place of publication Australia
Publisher Australasian Medical Publishing Company Pty Ltd
Abstract Objective: To assess the accuracy of data linkage across the spectrum of emergency care in the absence of a unique patient identifier, and to use the linked data to examine service delivery outcomes in an emergency department (ED) setting. Design: Automated data linkage and manual data linkage were compared to determine their relative accuracy. Data were extracted from three separate health information systems: ambulance, ED and hospital inpatients, then linked to provide information about the emergency journey of each patient. The linking was done manually through physical review of records and automatically using a data linking tool (Health Data Integration) developed by the CSIRO (Commonwealth Scientific and Industrial Research Organisation). Match rate and quality of the linking were compared. Setting: 10 835 patient presentations to a large, regional teaching hospital ED over a 2-month period (August – September 2007). Results: Comparison of the manual and automated linkage outcomes for each pair of linked datasets demonstrated a sensitivity of between 95% and 99%; a specificity of between 75% and 99%; and a positive predictive value of between 88% and 95%. Conclusions: Our results indicate that automated linking provides a sound basis for health service analysis, even in the absence of a unique patient identifier. The use of an automated linking tool yields accurate data suitable for planning and service delivery purposes and enables the data to be linked regularly to examine service delivery outcomes.
Peer Reviewed Yes
Published Yes
Publisher URI
Volume 194
Issue Number 4
Page from s34
Page to s37
ISSN 0025-729X
Date Accessioned 2012-02-17
Language en_US
Research Centre Centre for Health Practice Innovation; Menzies Health Institute Qld
Faculty Griffith Health Faculty
Subject Health and Community Services; Information Systems
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1

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