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Published on: October 23, 2020
Outcome prediction in critical care: physicians' prognoses vs. scoring systems
1Otto-von-Guericke University, Institute of Social Medicine and Health Economics, Magdeburg, Germany.
European Journal of Anaesthesiology
|October 12, 2004
Summary
Intensive care physicians
Area of Science:
- Critical Care Medicine
- Medical Prognosis
- Health Informatics
Background:
- Assessing patient prognosis in intensive care units (ICUs) is crucial for treatment planning.
- Objective scoring systems like Simplified Acute Physiology Score (SAPS) II are widely used but may not capture all relevant patient information.
- Physician expertise represents a potentially valuable, yet less quantifiable, prognostic tool.
Purpose of the Study:
- To compare the prognostic accuracy of intensive care physicians against the original SAPS II and a customized SAPS II model.
- To evaluate whether a modified SAPS II score offers improved accuracy in predicting patient mortality within a specific cohort.
- To determine the relative performance of subjective clinical judgment versus objective scoring systems in ICU prognostication.
Main Methods:
- Data from 412 ICU patients were collected, including criteria for SAPS II calculation and hospital discharge vital status.
- The original SAPS II was computed, and a customized version was developed using logistic regression and a bootstrap procedure on a sub-cohort.
- Intensive care physicians provided their individual prognostic judgments regarding patient hospital mortality.
Main Results:
- Physicians' prognoses demonstrated superior discrimination, with an area under the receiver operating characteristic curve of 0.84 (CI: 0.79-0.89).
- The original SAPS II achieved an area under the curve of 0.75 (CI: 0.69-0.80), while the customized SAPS II scored 0.72 (CI: 0.66-0.78).
- Physician prognoses were significantly more accurate than both the original and customized SAPS II scores, which showed similar performance.
Conclusions:
- Clinical prognoses provided by physicians significantly outperform objective scoring systems like SAPS II in predicting ICU patient mortality.
- Physicians likely integrate broader clinical knowledge and individual patient observations beyond objective data points for their prognostic assessments.
- The findings suggest that subjective clinical judgment remains a vital component in intensive care prognostication, potentially influencing treatment decisions and patient outcomes.
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