Implementation of a Standardized Sub-Intern Curriculum Improves Confidence for those Entering a Surgical Residency

Abstract

Objective: Medical students often feel underprepared entering surgical residency. We have previously reported the results of a sub-intern needs assessment (SINA) which informed the creation of a standardized sub-internship curriculum. We aimed to determine if implementation of this curriculum into students' scheduled rotations would improve student confidence in their abilities related to the AAMC Core Entrustable Professional Activities for Entering Residency (CEPAERs).

Design: We surveyed 4th year medical students during their surgery sub-internship. Sub-interns participated in a weekly series of 2-hour didactic sessions. We utilized interactive lectures and case scenarios addressing the pertinent topics identified in our previous needs assessment. The surveys were administered before and after the rotation and linked using unique identifiers. The surveys assessed confidence in each of the CEPAERs as well as the top 25 topics prioritized by our needs assessment. Self-reported confidence in each of the topics was measured using Likert scales (CEPAER scale 1-5, SINA scale 1-6). Pre- and post-curriculum confidence on a variety of topics were compared using paired t-tests.

Setting: Geisel School of Medicine at Dartmouth/Dartmouth-Hitchcock Medical Center, a tertiary-care academic medical center.

Participants: Fourth year medical students participating in their general surgery sub-internship.

Results: Twelve medical students participated in general and thoracic surgery sub-internships over the course of the study period. Ten (83%) participated in the didactic curriculum and they all completed both the pre- and postsurvey. 100% of the respondents agreed that the curriculum provided a useful supplement to their clinical experience. With respect to the CEPAERs, students reported improved confidence in 77% of the areas, with statistically significant increases occurring in the following areas: ability to prioritize a differential diagnosis (average Likert rating improved from 3.7 to 4.1, p = 0.04), comfort entering and discussing orders (2.9-3.8, p = 0.007), and overall preparedness to be a surgical intern (3.2-3.8, p = 0.02). Students also reported improvement in confidence in 92% of the basic intern responsibility topics, with statistically significant increases in maintenance fluid calculations (Likert rating 3.5-4.5, p = 0.001), repleting electrolytes (3.8-4.6, p = 0.01), interpretation of chest and abdominal x-rays (4-5, p = 0.02; 3.6-4.5, p=0.004, respectively), management of oliguria (3.2-3.8, p = 0.02), and time management/organization skills (4.5-5.4, p = 0.04).

Conclusions: Implementation of a standardized sub-intern curriculum improved student confidence in 33 of the 38 basic intern responsibilities, core Entrustable Professional Activities, and overall preparedness to be a surgical intern. While limited by a single institution design, we believe these results offer a new avenue for educating and preparing medical students for residency within their existing sub-internships.

Keywords: curriculum; entrustable professional activities; sub-internship; surgical internship.