This case-insensitive code system http://fhir.awmf.org/awmf.ig/CodeSystem/cs-amstar2-confidence-ratings defines the following codes:
Code
Display
Definition
Deutsch (German, de)
high
High
Zero or one non-critical weakness: The systematic review provides an accurate and comprehensive summary of the results of the available studies that address the question of interest.
Hoch
moderate
Moderate
More than one non-critical weakness: The systematic review has more than one weakness but no critical flaws. It may provide an accurate summary of the results of the available studies that were included in the review.
Moderat
low
Low
One critical flaw with or without non-critical weaknesses: The review has a critical flaw and may not provide an accurate and comprehensive summary of the available studies that address the question of interest.
Niedrig
critically_low
Critically Low
More than one critical flaw with or without non-critical weaknesses: The review has more than one critical flaw and should not be relied on to provide an accurate and comprehensive summary of the available studies.