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Evidence based medicine
evidence based medicine is the conscientious,explicit,and judicious use of current best evidence in making decisions about the care of individual patients.the practice of evidence based medicine means integrating individual clinical expertise with the best available external clinical evidence from systematic research,by individual clinical expertise we mean the proficiency and judgment that individual clinicians acquire through clinical experience and clinical practice.by best available external clinical evidence we mean clinically relevant research,often from the basic sciences of medicine,but especially from patient centered clinical research into the accuracy and precision of diagnostic tests(including the clinical examination),the power of prognostic markers,and the efficacy and safety of therapeutic,rehabilitative,and preventive regimens,external clinical evidence both invalidates previously accepted diagnostic tests and treatments and replaces them with new ones that are more powerful,more accurate,more efficacious,and safer.
循证医学是一种明确、谨慎、合理运用最优依据以决定个体患者的医学方法。循证医学实践意味着综合个人临床专业知识与系统研究中可得的最优外部临床依据。所谓个人临床专长是指临床医师本人从临床经验与临床实践中所获得的熟练程度与判断力。而最优外部临床依据是指临床相关研究，一般来自基础医学研究，尤其是针对患者的临床研究转化为准确的诊断试验（包括临床检查）、预后标志效应、治疗、康复及预防疗法的效果与安全性。外部临床依据旨在废除过去既定的诊断试验与疗法，并代之以更有力、更准确、更有效、更安全的新方法。
