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Overconfidence among physicians and nurses: the 'micro-certainty, macro-uncertainty' phenomenon.
A O Baumann1, R B Deber, G G Thompson
1McMaster University, School of Nursing, Hamilton, Ontario, Canada.
Social Science & Medicine (1982)
|January 1, 1991
Summary
Clinicians exhibit high personal confidence in their decisions, yet a lack of consensus exists among peers regarding optimal treatments. This disparity, termed micro-certainty versus macro-uncertainty, may explain persistent variations in clinical practice.
Area of Science:
- Clinical decision-making
- Healthcare professional confidence
- Medical practice variation
Background:
- Overconfidence among healthcare professionals can impact patient care and treatment efficacy.
- Understanding the sources of variation in clinical practice is crucial for improving healthcare outcomes.
Purpose of the Study:
- To investigate clinician overconfidence using two distinct research methodologies.
- To explore the relationship between individual certainty and group consensus in clinical decision-making.
Main Methods:
- Study 1: Examined treatment choices of physicians for breast cancer.
- Study 2: Assessed rapid decision-making among Intensive Care Unit nurses.
Main Results:
- Both studies revealed high individual confidence (micro-certainty) in decision-making.
- A significant lack of consensus (macro-uncertainty) was observed among respondents regarding optimal treatments.
- The gap between micro-certainty and macro-uncertainty was identified as a potential driver of practice variation.
Conclusions:
- Clinician overconfidence, characterized by high individual certainty and low group consensus, may contribute to persistent variations in medical practice.
- The findings have implications for patient safety, practitioner training, and professional regulation in healthcare.