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Categories for the strength of each recommendation
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CATEGORY
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DEFINITION
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A
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Good evidence to support a recommendation for use.
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B
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Moderate evidence to support a recommendation for use.
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C
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Poor evidence to support a recommendation for or against use.
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D
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Moderate evidence to support a recommendation against use.
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E
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Good evidence to support a recommendation against use.
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Categories for the quality of evidence on which recommendations
are made
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GRADE
|
DEFINITION
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I
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Evidence from at least one properly randomized, controlled trial.
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II
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Evidence from at least one well designed clinical trial without
randomization, from cohort or case-controlled analytic studies,
preferably from more than one centre, from multiple time series,
or from dramatic results in uncontrolled experiments.
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III
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Evidence from opinions or respected authorities on the basis of
clinical experience, descriptive studies, or reports of expert committees.
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