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Clinical Science

What is EBM?

Evidence-Based Medicine (EBM) or Evidence-Based Practice (EBP) involves a cycle of enquiry.

It begins with a patient dilemma, or problem. Then a question is asked.

The literature is searched to acquire information.

The results are appraised, then applied to the specific question and patient.

Evidence Based Practice

Source: Duke University Medical Center Library

Levels of evidence

Medical scientists and practitioners rank evidence in an hierarchy according to its quality.

The highest quality evidence is the systematic review. The lowest quality evidence is the editorials and expert opinion. 

Levels of evidence

Reference: Evidence-Based Practice in the Health Sciences: Evidence-Based Nursing Tutorial,Information Services Department of the Library of the Health Sciences-Chicago, University of Illinois at Chicago. Creative Commons License