Interpretation
These results reveal 2 major findings: first, there is a clear opportunity to increase the number of interns proficient at communicating informed consent, and second, efforts to improve communication should focus on demonstrating warmth and friendliness as well as encouraging questions from the patient. At first glance, it appears just over 3/5 of interns are proficient in communicating informed consent. Further scrutiny reveals a large discrepancy among proficient interns before and after EPA implementation. Nonetheless, the negative trend indicates a need for greater support and monitoring of intern communication skills during the informed consent process. Despite the large gap in proficiency between pre- and post-EPA groups, both groups shared the same 2 lowest-performing items: demonstrating warmth and friendliness and encouraging the patient’s questions. While “warmth and friendliness” is more difficult to objectively assess, studies evaluating the prevalence of what could be considered warm and friendly behavior among physicians have produced mixed results. For example, some studies found that warm and friendly behavior such as properly greeting the patient was a weakness among physicians [
7] while others found this to be a strength [
8]. Our findings certainly agree with studies that consistently rank the ability to encourage questions as a low-performing skill among physicians [
7,
9]. This particular finding reinforces a well-known issue in healthcare dubbed by some as “white-coat silence [
10].” Additionally, our findings reaffirmed more directly observable strengths such as explaining terms and avoiding medical jargon [
7-
9].
Improvements to intern communication skills could benefit particularly with a focus on encouraging questions and potentially on encouraging social behaviors that convey warmth and friendliness (e.g., greeting the patient by name). That said, relative average item performance was similar across items within each analysis group (i.e., overall, pre-EPA, and post-EPA). Therefore, students would likely benefit from broad support during undergraduate medical education to develop these skills. Doing so would contribute to a greater proportion of incoming interns that could be entrusted to obtain and communicate informed consent as outlined by EPA 11.
There were 2 unexpectedly sharp declines during 2010 and 2015. Considering the declines as potential outliers, we found the differences between groups remained statistically significant even when each year was excluded both individually and together. While the trends observed among these 2 groupss cannot be adequately explained, they do not appear to affect our overall statistical conclusions. Intern performance on national standardized training examinations remained constant over these periods of time.
A significant drop in post-EPA performance was unexpected, particularly given that the largest drop was not observed until 2 years after EPA implementation. One possible explanation is a change in how standardized patients were trained to evaluate interns. The implementation of the EPA may have clarified expectations around the informed consent process, subsequently prompting the residency site to better align SP training with these expectations. Therefore, the observed decline may actually be the result of higher expectations by the SPs rather than a true decline in performance by the interns. Though SP information was not available for all years, available SP data for years 2009–2011 (pre-EPA) and 2017–2018 (post-EPA) revealed that one SP in particular evaluated 68 interns during that time: 46 pre-EPA interns and 22 post-EPA interns. Analysis of this SP’s ratings revealed a statistically significant drop in average intern proficiency scores (P<0.01) following EPA implementation. This finding in conjunction with the diverse medical school education of the interns evaluated by the SP supports the idea that changes to SP training/expectations may be the source of the observed differences following EPA implementation. Additional studies involving multiple sites and a greater number of SPs would likely clarify this assertion.
Limitations
The first limitation of our study is that the data was collected from a single residency site and therefore subject to selection bias. We also did not have access to demographic information. However, interns represented over 86 medical schools across the world thereby increasing the diversity and representation in our sample, as well as external validity. A second limitation involves the subjective nature of some survey items (e.g., being warm and friendly). While SPs are trained together, it remains likely that some SPs rated interns differently due to subjective differences in how they perceived the intern during their interactions. However, the data underpinning our analyses spanned 11 years and included at least 7 SPs (based on 6 available years of SP information). Though subjective rater bias may be impossible to eliminate, standardized training combined with a variety of SPs over time limits the degree to which extreme ratings could influence the overall dataset. A third potential confounder includes the possibility of shared experiences in the same residency program contributing to similar habits developed amongst interns of the same cohort [
11]. Because interns were evaluated prior to beginning their clinical rotations, influence from peers or mentors on an intern’s informed consent habits is unlikely.
Conclusion
Overall, interns demonstrated moderate proficiency in communicating informed consent which is an EPA expected of incoming interns. Continued monitoring may clarify the trends observed in our data as well as specific areas of communication that need improvement such as growth around encouraging patients’ questions. Nonetheless, training programs (particularly undergraduate medical education) should continue to reinforce and assess communication skills in a variety of settings including during the critical informed consent process. Our data indicate a clear opportunity to increase the proportion of “entrustable learners” as they graduate medical school so that they can be expected to independently obtain informed consent from patients following EPA 11 at the start of residency.