Smart strategies for doctors and doctors-in-training : heuristics in medicine

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2009
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Wegwarth, Odette
Gigerenzer, Gerd
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CONTEXT How do doctors make sound deci- sions when confronted with probabilistic data, time pressures and a heavy workload? One theory that has been embraced by many researchers is based on optimisation, which emphasises the need to integrate all informa- tion in order to arrive at sound decisions. This notion makes heuristics, which use less than complete information, appear as second-best strategies. In this article, we challenge this pessimistic view of heuristics.


METHODS We introduce two medical problems that involve decision making to the reader: one concerns coronary care issues and the other macrolide prescriptions. In both settings, decision-making tools grounded in the principles of optimisation and heuristics, respectively, have been developed to assist doctors in making decisions. We explain the structure of each of these tools and compare their performance in terms of their facilitation of correct predictions.


RESULTS For decisions concerning both the coronary care unit and the prescribing of macrolides, we demonstrate that sacrificing information does not necessarily imply a forfeiting of predictive accuracy, but can sometimes even lead to better decisions. Sub- sequently, we discuss common misconceptions about heuristics and explain when and why ignoring parts of the available information can lead to the making of more robust predictions.


CONCLUSIONS Heuristics are neither good nor bad per se, but, if applied in situations to which they have been adapted, can be helpful companions for doctors and doctors-in-training. This, however, requires that heuristics in medicine be openly discussed, criticised, refined and then taught to doctors-in-training rather than being simply dismissed as harmful or irrelevant. A more uniform use of explicit and accepted heuristics has the potential to reduce variations in diagnoses and to improve medical care for patients.

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ISO 690WEGWARTH, Odette, Wolfgang GAISSMAIER, Gerd GIGERENZER, 2009. Smart strategies for doctors and doctors-in-training : heuristics in medicine. In: Medical Education. 2009, 43(8), pp. 721-728. ISSN 0308-0110. eISSN 1365-2923. Available under: doi: 10.1111/j.1365-2923.2009.03359.x
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@article{Wegwarth2009-08Smart-28049,
  year={2009},
  doi={10.1111/j.1365-2923.2009.03359.x},
  title={Smart strategies for doctors and doctors-in-training : heuristics in medicine},
  number={8},
  volume={43},
  issn={0308-0110},
  journal={Medical Education},
  pages={721--728},
  author={Wegwarth, Odette and Gaissmaier, Wolfgang and Gigerenzer, Gerd}
}
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    <dcterms:abstract xml:lang="eng">CONTEXT How do doctors make sound deci- sions when confronted with probabilistic data, time pressures and a heavy workload? One theory that has been embraced by many researchers is based on optimisation, which emphasises the need to integrate all informa- tion in order to arrive at sound decisions. This notion makes heuristics, which use less than complete information, appear as second-best strategies. In this article, we challenge this pessimistic view of heuristics.&lt;br /&gt;&lt;br /&gt;&lt;br /&gt;METHODS We introduce two medical problems that involve decision making to the reader: one concerns coronary care issues and the other macrolide prescriptions. In both settings, decision-making tools grounded in the principles of optimisation and heuristics, respectively, have been developed to assist doctors in making decisions. We explain the structure of each of these tools and compare their performance in terms of their facilitation of correct predictions.&lt;br /&gt;&lt;br /&gt;&lt;br /&gt;RESULTS For decisions concerning both the coronary care unit and the prescribing of macrolides, we demonstrate that sacrificing information does not necessarily imply a forfeiting of predictive accuracy, but can sometimes even lead to better decisions. Sub- sequently, we discuss common misconceptions about heuristics and explain when and why ignoring parts of the available information can lead to the making of more robust predictions.&lt;br /&gt;&lt;br /&gt;&lt;br /&gt;CONCLUSIONS Heuristics are neither good nor bad per se, but, if applied in situations to which they have been adapted, can be helpful companions for doctors and doctors-in-training. This, however, requires that heuristics in medicine be openly discussed, criticised, refined and then taught to doctors-in-training rather than being simply dismissed as harmful or irrelevant. A more uniform use of explicit and accepted heuristics has the potential to reduce variations in diagnoses and to improve medical care for patients.</dcterms:abstract>
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