Delphi Procedure In Core Outcome Set Development : Rating Scale And Consensus Criteria Determined Outcome Selection

• OBJECTIVE: To compare two different rating scales within one Delphi study for defining consensus in core outcome set development and to explore the influence of consensus criteria on the outcome selection.STUDY DESIGN: Randomized controlled parallel group trial with 1:1 allocation within the first Delphi round of the Core Outcome Set in the Incontinence-Associated Dermatitis (CONSIDER) project. Outcomes were rated on a three-point or nine-point Likert scale. Decisions about which outcomes to retain were determined by commonly used consensus criteria (i.e., (combinations of) proportions with restricted ranges, central tendency within a specific range and decrease in variance).RESULTS: Fifty-seven participants (group 1=28, group 2=29) rated 58 outcomes. The use of the nine-point scale resulted in almost twice as many outcomes being rated as 'critical' compared to the three-point scale (24 versus 13). Stricter criteria and combining criteria led to less outcomes being identified as 'critical'.CONCLUSION: The format of rating scales in Delphi studies for core outcome set development and the definition of the consensus criteria influence outcome selection. The use of the nine-point scale might be recommended to inform the consensus process for a subsequent rating or face-to-face meeting. The three-point scale might be preferred when determining final consensus.

Ämnesord

MEDICIN OCH HÄLSOVETENSKAP  -- Klinisk medicin -- Dermatologi och venereologi (hsv//swe)

MEDICAL AND HEALTH SCIENCES  -- Clinical Medicine -- Dermatology and Venereal Diseases (hsv//eng)

Nyckelord

Delphi-procedure

consensus

core outcome set

criteria

dermatology

incontinence-associated dermatitis

Publikations- och innehållstyp

ref (ämneskategori)

art (ämneskategori)