Lesson 5 · Other Designs and Approaches to Know · Step 7 of 7
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Delphi studies
When the evidence is thin and the answer has to come from expert judgment, a Delphi study asks experts independently and anonymously, feeds back the group's answer, and asks again over two to four rounds until the ratings stabilize. Anonymity blunts hierarchy and loud voices, and the feedback lets people update without being pressured face to face. Delphi is used to set research priorities, define indicators and build guidelines. It also inherits its panel's blind spots, so who counts as an expert should be reported as carefully as a trial's eligibility criteria.
Also covered: expert consensus · anonymity and controlled feedback · consensus thresholds · panel composition
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Lesson 5 · 7 steps
Research Designs · lesson 5 of 5