Using String Metrics to Identify Patient Journeys through Care Pathways
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Updated: Apr 12, 2026

Using Visual and Narrative Methods to Achieve Fair Process in Clinical Care
Published on: February 16, 2011
Richard Williams1, Iain E Buchan1, Mattia Prosperi2
1Centre for Health Informatics, University of Manchester, Manchester, UK ; Greater Manchester Primary Care Patient Safety Translational Research Centre, University of Manchester, Manchester, UK.
Abstract:
Given a computerized representation of a care pathway and an electronic record of a patient's clinical journey, with potential omissions, insertions, discontinuities and reordering, we show that we can accurately match the journey to a particular route through the pathway by converting the problem into a string matching one. We discover that normalized string metrics lead to more unique pathway matches than non-normalized string metrics and should therefore be given preference when using these techniques.
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