Lecture1 : EBM & Research question By Dr.Ahmed Yahya

Evidence-based medicine (EBM) is presented as the antidote to “following هوا” in clinical decisions—whether that هوا comes from tradition, personal habit, or persuasive authority. The core message is blunt: treatment choices should start with the right clinical question, then be answered using the strongest available evidence, not vibes, seniority, or marketing. This matters because wrong or ungrounded decisions can waste resources, harm patients, and even expose clinicians to legal and professional consequences.

The lecture frames EBM as a discipline of disciplined thinking. It begins by criticizing common everyday practices—cultural “rules” and inherited beliefs that substitute for evidence—and links that habit to a broader moral and intellectual duty to seek proof. From there, it lays out a practical workflow: convert a problem into a searchable question, acquire evidence through systematic searching (e.g., databases and reviews), and then judge the evidence’s quality rather than accepting it at face value. A recurring warning targets low-quality sources: Wikipedia-style summaries, “expert opinions” at the bottom of evidence hierarchies, and studies that are outdated or not methodologically sound.

A major portion explains how to rank evidence using an evidence hierarchy. The lecture contrasts weak forms of knowledge—case reports, case series, and expert opinion—with stronger designs such as randomized controlled trials, systematic reviews, and meta-analyses. The point isn’t just to “collect papers,” but to understand what each study design can reliably support. It also emphasizes currency: evidence must be updated, because new studies can change conclusions and guidelines. Even when evidence exists, the lecture stresses that clinicians must interpret it in context—availability of tests and treatments, local resources, and patient-specific realities.

The lecture also tackles the human side of EBM: patient preferences and shared decision-making. Guidelines and evidence guide the conversation, but the final choice involves the patient’s values, risks, and constraints. The clinician’s role becomes “shared” rather than authoritarian—explaining benefits and harms, documenting discussions, and respecting refusal when appropriate while still minimizing risk through safer alternatives or monitoring plans. This is paired with a practical ethics warning: clinicians should not hide behind evidence to avoid responsibility, nor should they ignore evidence because a patient dislikes it.

Finally, the lecture connects EBM to research training. It argues that research begins with a well-formed question—because “corruption of the ending comes from corruption of the beginning.” A good research question is feasible (possible with available resources and sample sizes), interesting to the target community, novel enough to add value, and grounded in a systematic review that identifies the knowledge gap. The lecture encourages students to “hunt” ideas, record them, and then refine them into structured objectives and study designs. It closes by reinforcing that evidence-based practice improves patient care, protects clinicians, strengthens academic output, and ultimately advances healthcare systems—especially when research is aligned with real local problems rather than copied topics.