Are USMLE Scores Valid Measures for Chief Resident Selection?

ABSTRACT Background The US Medical Licensing Examination (USMLE) Step 1 and Step 2 scores are often used to inform a variety of secondary medical career decisions, such as residency selection, despite the lack of validity evidence supporting their use in these contexts. Objective We compared USMLE scores between non–chief residents (non-CRs) and chief residents (CRs), selected based on performance during training, at a US academic medical center that sponsors a variety of graduate medical education programs. Methods This was a retrospective cohort study of residents' USMLE Step 1 and Step 2 Clinical Knowledge (CK) scores from 2015 to 2020. The authors used archived data to compare USMLE Step 1 and Step 2 CK scores between non-CR residents in each of the eligible programs and their CRs during the 6-year study period. Results Thirteen programs enrolled a total of 1334 non-CRs and 211 CRs over the study period. There were no significant differences overall between non-CRs and CRs average USMLE Step 1 (239.81 ± 14.35 versus 240.86 ± 14.31; P = .32) or Step 2 scores (251.06 ± 13.80 versus 252.51 ± 14.21; P = .16). Conclusions There was no link between USMLE Step 1 and Step 2 CK scores and CR selection across multiple clinical specialties over a 6-year period. Reliance on USMLE Step 1 and 2 scores to predict success in residency as measured by CR selection is not recommended.