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Composite score validity in clerkship grading.

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This study validated a composite score for surgery clerkships, finding it reliable and correlating well with other medical knowledge assessments. The score effectively measures student performance in surgical education.

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Area of Science:

  • Medical Education Research
  • Surgical Training Assessment
  • Psychometrics in Healthcare

Background:

  • Composite score validity relies on reliability, content, and comparative measures.
  • This study assessed these factors for a third-year surgery clerkship composite score.

Purpose of the Study:

  • To evaluate the reliability and validity of a composite score used in a third-year surgery clerkship.
  • To determine if the composite score correlates with other measures of academic achievement.

Main Methods:

  • Composite score reliability was assessed using stratified alpha.
  • Correlations were calculated between composite scores, clerkship grades, and external achievement measures (e.g., USMLE Step 2 CK).
  • Data were collected over two consecutive academic years (N=162, N=159).

Main Results:

  • The composite score demonstrated good reliability (Year 1: 0.76, Year 2: 0.81).
  • Significant positive correlations were observed between composite scores and scores on other clerkship tests and the USMLE Step 2 CK examination.
  • Surgery clerkship grades also showed positive correlations with other clerkship grades.

Conclusions:

  • The study provides evidence supporting the reliability of the composite score.
  • The findings indicate the composite score has validity for assessing performance in a surgery clerkship.