[Evidence-based medicine and clinical ethics: toward shared decision making]

Evidence-based medicine (EBM) is "decision-making for better patient care that integrates current evidence, and clinical expertise with patients' preferences, values and circumstances." It is important to distinguish research evidence from EBM, which is comprehensive decision-making that takes into account the diversity and individuality of clinical situations while respecting evidence as a general theory. Clinical practice guidelines are "a document that evaluates the total body of evidence through systematic review and presents recommendations that are considered optimal, taking into account the balance of benefits and harms, in order to support decision-making on important health-related issues by healthcare users and providers," and is useful in the practice of EBM. Shared decision making (SDM), which has been attracting attention in recent years, is "a process in which the patient and the health care provider, through dialogue, decide on a treatment plan that is acceptable to the patient, based on the patient's own preferences and values, research evidence, and clinical expertise" and must be understood in relation to the above definition of EBM and from the perspective of clinical ethics.