Gordon Henry Guyatt (born November 11, 1953) is a Canadian physician who is Distinguished University Professor in the Departments of Health Research Methods, Evidence and Impact (formerly Clinical Epidemiology & Biostatistics) and Medicine at McMaster University in Hamilton, Ontario. He is known for his leadership in evidence-based medicine, a term that first appeared in a single-author paper he published in 1991. Subsequently, a 1992 JAMA article that Guyatt led proved instrumental in bringing the concept of evidence-based medicine to the world's attention.[2] In 2007, The BMJ launched an international election for the most important contributions to healthcare. Evidence-based medicine came 7th, ahead of the computer and medical imaging. [3][4] Guyatt's concerns with the role of the medic