Arthroscopy. 2018 Feb;34(2):349-351. doi: 10.1016/j.arthro.2017.11.022.
Our current trend and focus on evidence-based medicine is biased in favor of randomized controlled trials, which are ranked highest in the hierarchy of evidence while devaluing expert opinion, which is ranked lowest in the hierarchy. However, randomized controlled trials have weaknesses as well as strengths, and no research method is flawless. Moreover, stringent application of scientific research techniques, such as the Delphi Panel methodology, allows survey of experts in a high quality and scientific manner. Level V evidence (expert opinion) remains a necessary component in the armamentarium used to determine the answer to a clinical question.
我们目前对循证医学的趋势和关注存在偏向，偏向于随机对照试验，这种研究方法在证据层级中排名最高，而贬低了专家意见，后者在证据层级中排名最低。然而，随机对照试验也有其弱点和优势，没有一种研究方法是完美的。此外，严格应用科学研究技术，如德尔菲小组方法，可以以高质量和科学的方式调查专家。五级证据（专家意见）仍然是确定临床问题答案的武器库中不可或缺的组成部分。
