What Does “Levels of Evidence” Mean in Evidence-Based Practice?

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In evidence-based practice (EBP), we talk a lot about "Levels of Evidence."  You will see levels of evidence (LOE) ratings on critically appraised topics or synopses of original research, or in the methodology section or evidence table of a clinical practice guideline or systematic review. But what does an LOE

 

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Evidence-Based Practice, How-To, Translating Evidence into Practice , , , ,