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Title: An extended mixture distribution survival tree for patient pathway prognostication
Authors: Garg, Lalit
McClean, Sally
Barton, Maria
Meenan, Brian
Fullerton, Ken
Keywords: Gaussian processes
Phase contrast magnetic resonance imaging
Stochastic models
Hospital utilization -- Length of stay
Cerebrovascular disease -- Patients
Issue Date: 2013
Publisher: Taylor & Francis Inc.
Citation: Garg, L., McClean, S., Barton, M., Meenan, B., & Fullerton, K. (2013). An extended mixture distribution survival tree for patient pathway prognostication. Communications in Statistics-Theory and Methods, 42(16), 2912-2934.
Abstract: Mixture distribution survival trees are constructed by approximating different nodes in the tree by distinct types of mixture distributions to improve within node homogeneity. Previously, we proposed a mixture distribution survival tree-based method for determining clinically meaningful patient groups from a given dataset of patients’ length of stay. This article extends this approach to examine the interrelationship between length of stay in hospital, outcome measures, and other covariates. We describe an application of this approach to patient pathway and examine the relationship between length of stay in hospital and/or treatment outcome using five-years’ retrospective data of stroke patients.
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