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Expert opinion is generally regarded as the most
reliable form of evidence
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Expert opinion should not be used in the development
of evidence-based guidelines
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Expert opinion may be used when more reliable forms
of evidence are available as long as the expert is well qualified
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Expert opinion is regarded as a form of evidence
that may be used when other reliable forms of evidence are not available
or not possible but should be systematically obtained so that it
truly reflects the available opinions of experts
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Correct.
Expert opinion is utilized in evidence-based guidelines when
evidence from studies is not available or not possible. Expert option
is viewed as a form of evidence that itself must be evaluated in
term of the methods used to obtain the evidence. Methods for obtaining
a consensus or a representative sample of expert opinion are increasingly
being used.
