Longitudinal Assessment of Resident Performance Using Entrustable Professional Activities.

Importance: Entrustable professional activities (EPAs) are an emerging workplace-based, patient-oriented assessment approach with limited empirical evidence.

Objective: To measure the development of pediatric trainees' clinical skills over time using EPA-based assessment data.

Design, Setting, And Participants: Prospective cohort study of categorical pediatric residents over 3 academic years (2015-2016, 2016-2017, and 2017-2018) assessed on 17 American Board of Pediatrics EPAs.