Published January 2003
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At least one meta-analysis, systematic review, or RCT rated as 1++, and directly applicable to the target population; or A body of evidence consisting principally of studies rated as 1+, directly applicable to the target population, and demonstrating overall consistency of results |
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A body of evidence including studies rated as 2++, directly applicable to the target population, and demonstrating overall consistency of results; or Extrapolated evidence from studies rated as 1++ or 1+ |
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A body of evidence including studies rated as 2+, directly applicable to the target population and demonstrating overall consistency of results; or Extrapolated evidence from studies rated as 2++ |
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Evidence level 3 or 4; or Extrapolated evidence from studies rated as 2+ |
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Recommended best practice based on the clinical experience of the guideline development group |
Note - this is an abbreviated version of the SIGN guidelines focusing on children. Only the practice points and tables are included. For the full version, which includes discussion of the evidence and gives full references, see http://www.sign.ac.uk/guidelines/fulltext/63/index.html