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  • Title: Modelling patient flows as an aid to decision making for critical care capacities and organisation.
    Author: Shahani AK, Ridley SA, Nielsen MS, Intensive Care Society's and Department of Health's Working Group on Patient Flows.
    Journal: Anaesthesia; 2008 Oct; 63(10):1074-80. PubMed ID: 18627366.
    Abstract:
    Using real data from a number of hospitals, we predicted the patient flows following a capacity or organisational change. Clinically recognisable patient groups obtained through classification and regression tree analysis were used to tune a simulation model for the flow of patients in critical care units. A tuned model which accurately reflected the base case of the flow of patients was used to predict alterations in service provision in a number of scenarios which included increases in bed numbers, alterations in patients' lengths of stay, fewer delayed discharges, caring for long stay patients outside the formal intensive care unit and amalgamating small units. Where available the predictions' accuracy was checked by comparison with real hospital data collected after an actual capacity change. The model takes variability and uncertainty properly into account and it provides the necessary information for making better decisions about critical care capacity and organisation.
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