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Related Experiment Videos

Characterizing physicians' perceptions of ambiguity.

S P Curley1, M J Young, J F Yates

  • 1Department of Management Sciences, University of Minnesota, Minneapolis 55455.

Medical Decision Making : an International Journal of the Society for Medical Decision Making
|April 1, 1989
PubMed
Summary
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Physicians

Area of Science:

  • Decision analysis in medicine
  • Medical decision-making
  • Cognitive science in healthcare

Background:

  • Ambiguity, distinct from uncertainty, impacts patient and physician decisions.
  • Understanding how decision-makers perceive ambiguity is crucial.
  • Existing measures of ambiguity in medical judgment require further examination.

Purpose of the Study:

  • To investigate how ambiguity is conceptualized by medical professionals.
  • To evaluate the properties of three distinct ambiguity indicators: confidence rating, plausible range, and interquartile range.
  • To determine which indicator best reflects the construct of ambiguity in clinical judgment.

Main Methods:

  • Utilized simulated cases of suspected coronary artery disease for evaluation.

Related Experiment Videos

  • Involved board-certified internists and fourth-year medical students as participants.
  • Assessed the properties and adequacy of confidence ratings, plausible ranges, and interquartile ranges as measures of ambiguity.

    • Main Results:

    • The interquartile range was found to be largely redundant with the plausible range and least adequate.
    • Confidence ratings were not equivalent to plausible ranges.
    • Confidence ratings appeared to be the most effective indicator of ambiguity as defined in the study.

    Conclusions:

    • Confidence ratings emerge as a superior measure for reflecting ambiguity in medical decision-making.
    • The plausible range is a more adequate indicator than the interquartile range.
    • Further research into ambiguity measurement can refine clinical decision support tools.