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Related Experiment Videos

Delphi as a method to establish consensus for diagnostic criteria.

Brent Graham1, Glenn Regehr, James G Wright

  • 1Toronto Western Hospital, 399 Bathurst Street, FP-174 M5T 2S8, Toronto, ON, Canada. brent.graham@utoronto.ca

Journal of Clinical Epidemiology
|December 19, 2003
PubMed
Summary

This study used the Delphi method to reach expert consensus on clinical diagnostic criteria for carpal tunnel syndrome (CTS). The Delphi approach proved effective, enhancing agreement on CTS diagnostic standards.

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Area of Science:

  • Neurology
  • Clinical Diagnostics
  • Medical Consensus Building

Background:

  • Carpal tunnel syndrome (CTS) diagnosis relies on clinical criteria.
  • Establishing a consensus on these criteria is crucial for accurate diagnosis.

Purpose of the Study:

  • To achieve expert consensus on the optimal clinical criteria for diagnosing carpal tunnel syndrome (CTS).

Main Methods:

  • A panel of experts rated the diagnostic importance of clinical history and physical examination items for CTS.
  • A two-round Delphi process with feedback on group responses was employed.
  • Cronbach's alpha was used to measure the homogeneity and consensus among panelists.

Main Results:

  • Consensus, measured by Cronbach's alpha, increased from 0.86 to 0.91 after the second Delphi round.

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  • Panelists' opinions converged, with outliers showing higher correlation to the group after feedback.

    • Conclusions:

    • The Delphi method is effective for achieving consensus on clinical diagnostic criteria.
    • Cronbach's alpha is a valuable statistic for quantifying consensus.
    • The feasibility, anonymity, and geographic independence of the Delphi method make it suitable for complex diagnostic criteria development.