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

Abstract

Background: 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.

Methods: 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.

Results: 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).

Conclusions: 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.

Keywords: ABSITE; Medical Knowledge; Patient Care; Practice-Based Learning and Improvement; USMLE; assessment; education; simulation; surgery.