Making Sense of Trainee Performance: Entrustment Decision-Making in Internal Medicine Program Directors.

: Competency-based assessment is an important but challenging aspect of residency education but determines trainees' progression towards the ultimate goal of graduation. Entrustment decision making has been proposed as a supplementary metric to assess trainee competence. This study explores the process by which Program Directors (PDs) make entrustment decisions in Internal Medicine (IM) training programs. : Purposive sampling was used to recruit PDs from ACGME-accredited IM training programs to participate in a semi-structured interview. We analyzed interviews using an iterative, grounded theory-based approach to allow identification of themes that define the process of trainee entrustment. : Sixteen PDs were interviewed. Qualitative analysis showed that PDs use a dynamic process to understand trainee entrustability and progression towards competence, including construction of assessment networks, comparing performance to expected trajectory of trainee competence development, and bidirectional filtering and weighing of assessment data. : PDs serve as a central processor by which assessment data on trainees is filtered, weighted, and compared an expected trajectory, all to gain understanding of trainee performance. Assessment networks are crucial to understanding trainee competence. While expected trajectory is an important tool to determine how trainees are progressing, its continued use may inject bias into the assessment process and slow transition to true competency-based assessment.