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What is Evidence Rating?

Evidence rating is a process by which scientific evidence is used to support recommendations about clinical decisions. Evidence rating has become an expectation of multidisciplinary health care organizations.

To meet this expectation,AORN’s board of directors made the decision in 2010 to create a process for rating and ranking the evidence used to shape AORN’s recommended practices. This evidence rating process for AORN was developed by experts within AORN, including the association’s Evidence-rating Task Force, Recommended Practices Advisory Board, Research Committee, and perioperative nurse staff members, with assistance from partner organizations, such as The Institute for Johns Hopkins Nursing.

This evidence rating is a two-step process. First, the references of an AORN recommended practice are appraised using the Johns Hopkins nursing evidence appraisal tools. Next, each practice recommendation is rated using the Oncology Nursing Society model.


Find news and other information as this evidence ranking and rating of AORN’s recommended practices is implemented.

Translating Evidence to Practice for Mechanical Venous Thromboembolism Prophylaxis -- AORN Journal, November 2012

Management Connections: Understanding evidence rating of AORN recommended practices -- AORN Connections, Feb 2012

Weighing the evidence for sterilization -- AORN Connections, November 2011 

Selection of a Method to Rate the Strength of Scientific Evidence for AORN Recommendations -- AORN Journal, April 2011 


/uploadedImages/Main_Navigation/Clinical_Practice/Recommended_Practices/Recommended_Practices_News/6695RP_234x234(1).1.jpgAORN's Perioperative Standards and Recommended Practices, 2013 Edition introduces the first ever evidence-rated recommended practices with new and significantly revised content on:
  • Prevention of Transmissible Infections  
  • Safe Environment of Care 
  • Sterile Technique 
  • Sterilization 


Standards & Recommended Practices


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