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Related Experiment Videos

Preventable deaths: who, how often, and why?

R W Dubois1, R H Brook

  • 1RAND Corporation, Los Angeles, California.

Annals of Internal Medicine
|October 1, 1988
PubMed
Summary
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A new method revealed that a significant percentage of hospital deaths are preventable. This study found that 14% of patient deaths were probably preventable, highlighting areas for quality improvement.

Area of Science:

  • Healthcare Quality Improvement
  • Patient Safety Research
  • Medical Outcomes Analysis

Background:

  • Hospital quality of care is linked to patient mortality rates.
  • Identifying preventable deaths is crucial for improving healthcare outcomes.

Purpose of the Study:

  • To develop and apply a novel method for assessing preventable deaths in hospitals.
  • To quantify the proportion of deaths that could have been prevented across different conditions and hospital types.

Main Methods:

  • Reviewed 182 deaths from 12 hospitals (high and low outlier death rates) for cerebrovascular accident, pneumonia, and myocardial infarction.
  • Physicians independently reviewed patient summaries to determine preventability using majority and unanimity criteria.
  • Analyzed patient characteristics and causes of death for preventable cases.

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Main Results:

  • 14% of deaths were deemed probably preventable using a unanimity criterion.
  • Preventable deaths occurred in younger, less demented, and less severely ill patients.
  • Preventable myocardial infarction deaths stemmed from management errors, while cerebrovascular accident deaths reflected diagnostic errors.

Conclusions:

  • A substantial proportion of hospital deaths are potentially preventable.
  • Patient severity of illness is a key factor in identifying preventable deaths retrospectively.
  • The developed method requires further validation and replication for broader application.