The term “Evidence-based Medicine” (EBM) first appeared in medical literature in 1991 when Gordon Guyatt, a faculty member at McMaster Medical School in Hamilton, Ontario, published an Editorial entitled “Evidence-based Medicine” [1]. Sackett et al. [2], appropriately defined EBM as the “conscientious, explicit, and judicious use of current best evidence in making decisions about the care of individual patients”. This new approach for taking decisions in clinical practice derived from the need to go beyond the traditional way of making clinical choices which relied mainly upon the basis of clinical experience.
