Feature importance analysis for patient management decisions

Michal Valko 1, 2 Milos Hauskrecht 1
1 Department of Computer Science - University of Pittsburgh
2 SEQUEL - Sequential Learning
LIFL - Laboratoire d'Informatique Fondamentale de Lille, Inria Lille - Nord Europe, LAGIS - Laboratoire d'Automatique, Génie Informatique et Signal
Abstract : The objective of this paper is to understand what characteristics and features of clinical data influence physician's decision about ordering laboratory tests or prescribing medications the most. We conduct our analysis on data and decisions extracted from electronic health records of 4486 post-surgical cardiac patients. The summary statistics for 335 different lab order decisions and 407 medication decisions are reported. We show that in many cases, physician's lab-order and medication decisions are predicted well by simple patterns such as last value of a single test result, time since a certain lab test was ordered or time since certain procedure was executed.
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Communication dans un congrès
13th International Congress on Medical Informatics MEDINFO 2010, Sep 2010, Cape Town, South Africa. IOS Press, pp.861-865, 2010, MEDINFO 2010 - Proceedings of the 13th World Congress on Medical Informatics. 〈10.3233/978-1-60750-588-4-861〉
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Michal Valko, Milos Hauskrecht. Feature importance analysis for patient management decisions. 13th International Congress on Medical Informatics MEDINFO 2010, Sep 2010, Cape Town, South Africa. IOS Press, pp.861-865, 2010, MEDINFO 2010 - Proceedings of the 13th World Congress on Medical Informatics. 〈10.3233/978-1-60750-588-4-861〉. 〈hal-00643123〉

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