According to Duke University Medical Library (2005, cited by Levin et al. 2007), the highest level of evidence is at the top of the pyramid and is characterised by increased relevance of evidence for the clinical situation studied.
According to Duke University Medical Library (2005, cited by Levin et al. 2007), thehighest level of evidence is at the top of the pyramid and ischaracterised by increased relevance of evidence for theclinical situation studied.