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Related Experiment Videos

Risk-adjusted analysis of surgeon performance: a 1-year study

G P Copeland1, P Sagar, J Brennan

  • 1Warrington Hospital NHS Trust, Cheshire, UK.

The British Journal of Surgery
|March 1, 1995
PubMed
Summary
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Comparing surgeon performance requires careful analysis beyond raw statistics. The Physiological and Operative Severity Score for the enUmeration of Mortality and Morbidity (POSSUM) system offers a more accurate method for monitoring surgical quality.

Area of Science:

  • Surgical Quality Assessment
  • Health Services Research
  • Patient Safety

Background:

  • Surgeon performance evaluation is crucial for maintaining high standards in healthcare.
  • Traditional methods of comparing surgeon outcomes using raw mortality and morbidity rates can be misleading.
  • The need for a more objective and risk-adjusted system for assessing surgical quality is evident.

Purpose of the Study:

  • To evaluate the reliability of raw mortality and morbidity statistics for comparing individual surgeon performance.
  • To introduce and assess the utility of the Physiological and Operative Severity Score for the enUmeration of Mortality and Morbidity (POSSUM) scoring system in quality assessment.
  • To demonstrate an improved method for monitoring surgeon performance and identifying potential disparities.

Main Methods:

Related Experiment Videos

  • A 1-year prospective analysis of non-day-case general surgery patients (n=3004) in a district general hospital.
  • Application of the Physiological and Operative Severity Score for the enUmeration of Mortality and Morbidity (POSSUM) scoring system to assess patient risk.
  • Calculation of the observed to expected (O:E) ratio for mortality and morbidity for each surgeon to adjust for patient complexity.

Main Results:

  • Raw mortality rates varied significantly (1.0-4.9%), but O:E ratios showed a narrower range (0.83-1.06), indicating risk adjustment is necessary.
  • Morbidity rates also demonstrated considerable variation (5.3-12.6%), with O:E ratios ranging from 0.86-1.02.
  • The study highlights the potential for significant misunderstanding and misinterpretation of 'league tables' based on uncorrected data.

Conclusions:

  • Raw mortality and morbidity data are inadequate and potentially hazardous for comparing surgeon performance.
  • The POSSUM scoring system and O:E ratios provide a more accurate and equitable method for monitoring surgical quality.
  • Accurate monitoring of surgeon performance is essential to avoid misinterpretations and ensure patient safety.