What level of information do you use in your organization to make decisions?
Are there a few simple steps that you have found useful to filter, improve your information?
Levels of evidence (sometimes called hierarchy of evidence) are assigned to studies based on the methodological quality of their design, validity, and applicability to patient care. These decisions gives the “grade (or strength) of recommendation. – Winona State University
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P.S. As a guideline, most of the articles published in the Harvard Business Review probably resides at the level of Expert Opinion.