The Joanna Briggs Institute, our Collaborating Centres and Evidence Translation Groups currently assign a level of evidence to all conclusions drawn in JBI Systematic Reviews.
The JBI Levels of Evidence are:
History of Levels of Evidence
From 2003-2004 The Joanna Briggs Institute used the levels of evidence from Australian National Health & Medical Research Council - NHMRC Development, implementation and evaluation for clinical practice guidelines published in 1999. These levels assess the validity of recommendations for clinical guidelines and focuses, understandably, on the effectiveness of treatment. As The Joanna Briggs Institute has a broader definition of what constitutes evidence, a more inclusive approach to the development and grading of levels of evidence and implications for practice was later developed.
Until 2003 the Institute used the levels of evidence as specified by the NHMRC 1995 Guidelines for the Development and Implementation of Clinical Practice Guidelines.