• Isolde Sommer, Viktoria Titscher, Monika Szelag, and Gerald Gartlehner.
• Department for Evidence-Based Medicine and Evaluation, Danube University Krems, Krems, Austria.
• Patient Prefer Adher. 2021 Jan 1; 15: 57-68.

PurposeDespite evidence from clinical guideline development that physicians and patients show discordance in what they consider important in outcome selection and prioritization, it is unclear to what extent outcome preferences are concordant between experts and citizens when it comes to the context of primary prevention. Therefore, the objective of this study was to assess whether expert judgments about the importance of beneficial and harmful outcomes differ from citizen preferences when considering intervention options for a periodic health examination (PHE) program.Participants And MethodsWe conducted an online survey using a modified Delphi approach. The target population for the survey consisted of citizens who had attended the PHE (n=18) and experts who made evidence-based recommendations (n=11). Citizens and experts assigned a score on a 9-point Likert scale for each outcome of 14 interventions. We analyzed the intragroup agreement based on Krippendorff's alpha and the intergroup agreement using the cube root product measure (CRPm). We further tested for significant differences between the groups using the Mann U-test.ResultsAgreements within the groups of citizens and experts varied across the interventions and tended to be poor (α ≤0 to 0.20) or fair (α = 0.21 to 0.40), with three exceptions showing moderate agreement (α = 0.44 to 0.55). The agreements between the citizens and experts across the interventions was fair (CRPm = 0.28) during the first Delphi rating round. The mean differences between the citizens and experts on the Likert scale ranged from 0.0 to 3.8 during the first rating round and from 0.0 to 3.3 during the second. Across interventions, the citizens rated the outcomes as more important than the experts did (p<0.01). Individual participants' ratings varied substantially.ConclusionBecause experts generally underestimated the outcomes' importance to citizens, the involvement of citizens in guideline panels for preventive services is important.© 2021 Sommer et al.

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