About levels of evidence Evidence grading makes it easier for busy physicians to apply the results of clinical research to their practice

摘要

Levels of evidence are assigned to studies based on the quality of their design, validity, and applicability to patient care. The Agency for Health Care Quality and Research (AHRQ) has proposed that any system assigning levels of evidence should incorporate quality, quantity, and consistency of the evidence.Leading family medicine journals have adopted a uniform grading system known as the Strength of Recommendation Taxonomy1 (SORT), which includes these key elements and 3 levels of evidence. SORT is one among several different methods of grading levels of evidence that make use of similar principles. SORT'S primary advantage is its simplicity.