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Inter-Rater Reliability Of Objective Structured Long Examination Record.

Syed Inamullah Shah1, Mehreen Baig1, Sajida Shah2

  • 1Department of Surgery, Foundation University Medical College, Islamabad, Pakistan.

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|June 26, 2018
PubMed
Summary
This summary is machine-generated.

The Objective Structured Long Examination Record (OSLER) scale shows good validity but requires more structure. This study found low inter-rater reliability, suggesting improvements are needed for consistent assessment in medical examinations.

Keywords:
Long caseOSLERReliability

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Area of Science:

  • Medical Education
  • Assessment Methods
  • Psychometrics

Background:

  • The Objective Structured Long Examination Record (OSLER) scale was developed in 1997 to enhance long case examinations.
  • Existing psychometric evidence for the OSLER scale's reliability is lacking.
  • This study aimed to evaluate the inter-rater reliability of the OSLER scale.

Purpose of the Study:

  • To assess the inter-rater reliability of the Objective Structured Long Examination Record (OSLER) scale.
  • To provide psychometric evidence regarding the consistency of OSLER scale application.
  • To identify areas for improvement in the OSLER scale for more reliable medical assessments.

Main Methods:

  • 105 students were evaluated in a final professional examination's long case component.
  • Two examiner groups, actual and mock, utilized the OSLER scale.
  • Inter-rater reliability was calculated using Kappa statistic and intraclass correlation coefficient (ICC) via SPSS 23.

Main Results:

  • Mean scores were 55.36 (SD=11.2) by actual examiners and 57.74 (SD=14.1) by mock examiners.
  • Cronbach's alpha was 0.586.
  • Kappa statistic was 0.019, and inter-rater reliability via ICC was 0.413, indicating low agreement.

Conclusions:

  • The OSLER scale is a practical modification for long case examinations with demonstrated validity.
  • The current OSLER scale exhibits insufficient inter-rater reliability for consistent application.
  • Structural enhancements to the OSLER scale are recommended to improve its psychometric properties and reliability.