A many‐facet Rasch measurement model approach to investigating objective structured clinical examination item parameter drift

RATIONALE: Objective Structured Clinical Examinations (OSCEs) are widely used for assessing clinical competence, especially in high-stakes environments such as medical licensure. However, the reuse of OSCE cases across multiple administrations raises concerns about parameter stability, known as item parameter drift (IPD). AIMS & OBJECTIVES: This study aims to investigate IPD in reused OSCE cases while accounting for examiner scoring effects …