This web site is appropriate for advanced practitioners of evidence based medicine.  The links below connect to several schemes for measuring the quality and strength of evidence when evaluating journal articles and other resources in medical and related fields; some are intended to apply solely to specific resources and/or organizations; others are intended for general use.  

AGREE (Appraisal of Guidelines Research and Evaluation)

• AGREE instrument

American College of Chest Physicians

• What is the grading system for the recommendations?

American Family Physician

• Guidelines for rating levels of evidence in clinical review articles

GRADE Working Group

• Grading the quality of evidence and strength of recommendations

Oxford Centre for Evidence Based Medicine

• Levels of Evidence and Grades of Recommendation

PDQ

• Definition of Levels of Evidence

• Levels of Evidence for Adult Cancer Treatment Studies

• Strength of Study Design

• Strength of Endpoints

• Summary

• Levels of Evidence for Human Studies of Cancer Complementary and Alternative Medicine

• Strength of Study Design

• Strength of Endpoints

• Combined Levels of Evidence Score

• Levels of Evidence for Cancer Screening and Prevention Studies

• Evaluation of Evidence

• Notes on Quality Assessment
  

• Cancer Genetics Overview

US Preventive Services Task Force

• Topic Index
  

Judith Welsh, MLS, BSN, RN
Clinical Informationist
NIH Library, 10/1L13
301.594.6211; welshju@mail.nih.gov

January 2008