Teaching Medical Epistemology within an Evidence-Based Medicine Curriculum

Issue: Epistemology, the branch of philosophy that deals with the nature, value, and use of knowledge, receives little or no formal attention in medical education. Yet the understanding of medical epistemology - focused on what kinds of medical knowledge are relevant to clinical decisions, the strengths and limitations of those different kinds of knowledge, and how they relate to one another and to clinical expertise - represents a critical aspect of medical practice. Evidence: Understanding the meaning of the term "evidence" is one of the fundamental tasks of medical epistemology. Other foundations of the evidence-based medicine movement, such as the "hierarchy of evidence" and the concept of "best" evidence, rest upon epistemological assertions, claims regarding the appropriate kinds and relative value of knowledge in medicine. Here we rely upon the work of philosophers of medicine who have been engaged in debates regarding the epistemic tenets of the evidence-based medicine movement. We argue that medical students and physicians-in-training should learn basic terminology and methods of epistemology as they are being introduced to the concepts and techniques of evidence-based medicine. Implications: The skepticism and critical analysis encouraged by EBM can and should be applied to the underlying assumptions and primary tenets of EBM itself. It is not enough for philosophers to partake in this endeavor; students, trainees, and clinicians need to carefully and constantly examine the reasons and reasoning that coalesce into clinical acumen. Our role as medical educators is to give them the tools, including a basic understanding of epistemology, to do that over a lifetime.