Factors that Predict an Intern's First ABSITE Score are Known by September

Abstract

Previous studies offer conflicting relevance of a variety of factors to predict resident performance on the The American Board of Surgery In-Training Exam (ABSITE). With numerous stellar applicants scoring poorly on their first ABSITE, we sought to identify key factors that might allow us to tailor pre-emptive study efforts in the fall and early winter to enhance scores. General Surgery residents in our program from 2009 through 2016 were included in our cohort study. Specific trainee data (sex, prelim vs categorical, United States Medical Licensing Examination (USMLE) Step 1 and 2 scores, ABSITE scores, clinical rotations, biannual objective structured clinical examination OSCE-type scores, and in-house prep test [IHPT], etc.) were collected retrospectively. The data were analyzed using JMP pro 10 and MedCalc. ABSITE scores of our 110 trainees did not vary by sex or by categorical vs preliminary residents. USMLE step 1 and 2, IHPT and one objective structured clinical examination (OSCE) station (Sim-Based Trauma Exam) scores were positively correlated with ABSITE scores (p < 0.05; correlation coefficient (CC) = 0.6 [strong] for IHPT, 0.5 [moderate] for step 1 and 2 and [weak] 0.3 for Sim-Based Trauma Exam). The mean (standard deviation) ABSITE %tile score for residents scoring above 230 (USMLE 1 or 2) vs <230 were different: 81 (3) vs 56 (4) (p < 000.1). Of residents scoring lower than 230 in USMLE 1 or 2, their ABSITE performance had a strong positive linear correlation with their performance in the IHPT (CC = 0.7) and SBTA (CC = 0.5). Residents rotating twice on the Acute Care Surgery services before the ABSITE scored higher than those with 1 or zero rotations (p < 0.05). USMLE steps 1 and 2 are useful parameters in our program to predict subsequent resident ABSITE performance. An in-house 60-minute preparation test in September, a 6-minute simulation-based trauma assessment in July, and rotation schedule with 2 stints on Acute Care Surgery were surprisingly useful early intern year tools to predict ABSITE scores.