Objective structured assessment of technical skill (OSATS) for surgical residents

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ID: 290789
1997
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Abstract
Background The technical skill of surgical trainees is not well assessed. This study aimed (1) to compare the reliability of three scoring systems, (2) to compare live and bench formats and (3) to assess construct validity of a test of operative skill. Methods Parallel examinations of operative skill, one using live animals and one using simulations, were developed. Performance was graded using operation-specific checklists, detailed global rating forms and pass/fail judgements. Twenty surgical residents each took both formats. Results Disattenuated correlations between live and bench scores were high (0.69–0.72). Mean inter-rater reliability across stations ranged from 0.64 to 0.72. Internal consistency was moderate to high (α: 0.61–0.74) for the live format using the checklist and for live and bench formats using global ratings. Global ratings discriminated between resident levels for both formats (bench: F(2,17) = 4.45, P < 0.05; live: F(2,17) = 3.5, P < 0.05), checklists did not. Conclusion This preliminary study suggests that the Objective Structured Assessment of Technical Skill can reliably and validly assess surgical skills. Global ratings are a better method of assessment than task-specific checklists. Bench model simulation gives equivalent results to use of live animals for this test format.
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Authors Jenepher Martin, Glenn Regehr, Richard K. Reznick, Helen MacRae, John Murnaghan, Carol Hutchison, Mitchell H. Brown
Journal the british journal of surgery
Year 1997
DOI
10.1046/j.1365-2168.1997.02502.x
URL
https://doi.org/10.1046/j.1365-2168.1997.02502.x
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