Construct Validity and Generalizability of Simulation-Based Objective Structured Clinical Examination Scenarios

Abstract

BACKGROUND: It is not known if construct-related validity (progression of scores with different levels of training) and generalizability of Objective Structured Clinical Examination (OSCE) scenarios previously used with non-US graduating anesthesiology residents translate to a US training program. OBJECTIVE: We assessed for progression of scores with training for a validated high-stakes simulation-based anesthesiology examination. METHODS: Fifty US anesthesiology residents in postgraduate years (PGYs) 2 to 4 were evaluated in operating room, trauma, and resuscitation scenarios developed for and used in a high-stakes Israeli Anesthesiology Board examination, requiring a score of 70% on the checklist for passing (including all critical items). RESULTS: The OSCE error rate was lower for PGY-4 than PGY-2 residents in each field, and for most scenarios within each field. The critical item error rate was significantly lower for PGY-4 than PGY-3 residents in operating room scenarios, and for PGY-4 than PGY-2 residents in resuscitation scenarios. The final pass rate was significantly higher for PGY-3 and PGY-4 than PGY-2 residents in operating room scenarios, and also was significantly higher for PGY-4 than PGY-2 residents overall. PGY-4 residents had a better error rate, total scenarios score, general evaluation score, critical items error rate, and final pass rate than PGY-2 residents. CONCLUSIONS: The comparable error rates, performance grades, and pass rates for US PGY-4 and non-US (Israeli) graduating (PGY-4 equivalent) residents, and the progression of scores among US residents with training level, demonstrate the construct-related validity and generalizability of these high-stakes OSCE scenarios.