National Comprehensive Cancer Network (NCCN) uses categories o describe the level of evidence for a recommendation about an action.
Parameters:
(1) consensus on appropriateness
(2) level of evidence
|
Consensus on Appropriateness
|
Level of Evidence
|
Category
|
|
uniform
|
high level
|
Category 1
|
|
uniform
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less than high level
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Category 2a
|
|
less than uniform
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less than high level
|
Category 2b
|
|
major disagreement
|
NA
|
Category 3
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where:
• The level of evidence does not cover low or no levels of evidence. Presumably that should be Category 3 despite the criteria for Category 2.
• The scheme does not cover high level of evidence with less than uniform consensus. In the implementation this will be Category 2a.
Categories 1 and 2A are usually viewed as good evidence for an action.
