Using a Clinical Practice Guideline
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A clinical practice guideline is a systematically developed statement designed to assist practitioner and patient decisions about appropriate health care for specific clinical circumstances.

Levels of Recommendation (Proposed)

A1: RCTs, no heterogeneity, CIs clear threshold NNT
A2: RCTs, no heterogeneity, CIs cross threshold NNT
B1: RCTs, heterogeneity, CIs clear threshold NNT
B2: RCTs, heterogeneity, CIs cross threshold NNT
C1: Observational studies, CIs clear threshold NNT
C2: Observational studies, CIs cross threshold NNT