Decision-Theoretic Evaluation of Therapy Plans

Abstract Medical decision-support systems that make recommendations for action require a mechanism for comparing the available alternatives. In developing a computer-based system to provide ventilator-setting recommendations, the decision-theoretic concept of a multiattribute value model was used to rank potential plans. The possible treatment plans represent a continuum of choice rather than several discrete options. Physician preferences are obtained by using an automated assessment tool that uses a physiologic model to simulate patient responses to therapy. The decision-theoretic approach described here is able to differentiate among continuous options, is efficient enough to be used in a real time setting, and makes explicit the criteria for selecting plans.

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