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Related Experiment Video

Updated: Jul 12, 2026

Semiautomated Longitudinal Microcomputed Tomography-based Quantitative Structural Analysis of a Nude Rat Osteoporosis-related Vertebral Fracture Model
07:12

Semiautomated Longitudinal Microcomputed Tomography-based Quantitative Structural Analysis of a Nude Rat Osteoporosis-related Vertebral Fracture Model

Published on: September 28, 2017

Diagnostic errors in three medical eras: a necropsy study.

K Sonderegger-Iseli1, S Burger, J Muntwyler

  • 1Medical Clinic B, Department of Internal Medicine, University Hospital, University of Zurich, Switzerland.

Lancet (London, England)
|July 8, 2000
PubMed
Summary
This summary is machine-generated.

Diagnostic errors in hospitalized patients significantly decreased over 20 years, with major discrepancies in clinical diagnosis being halved. This improvement in diagnostic accuracy is likely due to enhanced clinical skills and advanced diagnostic procedures.

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Area of Science:

  • Medical Diagnosis
  • Clinical Pathology
  • Healthcare Quality Improvement

Background:

  • Previous studies indicated no decline in diagnostic errors over time.
  • Assessed changes in diagnostic accuracy in hospitalized patients over a 20-year period.

Purpose of the Study:

  • To evaluate trends in diagnostic accuracy over two decades.
  • To identify factors contributing to changes in diagnostic error rates.

Main Methods:

  • Retrospective analysis of diagnostic errors using necropsy (autopsy) as the gold standard.
  • Random selection of 300 patients from a Swiss tertiary-care hospital across 1972, 1982, and 1992.
  • Classification of discrepancies into major and minor diagnostic errors.

Main Results:

  • Major diagnostic discrepancies significantly decreased from 30% in 1972 to 14% in 1992 (p=0.007).
  • Minor diagnostic errors significantly increased from 23% to 46% over the study period (p<0.001).
  • Improved accuracy was noted in cardiovascular and infectious diseases, with increased use of non-invasive diagnostic techniques.

Conclusions:

  • The frequency of major diagnostic errors was halved over 20 years.
  • Improved clinical skills and advancements in diagnostic procedures likely contributed to enhanced diagnostic accuracy.