Roberts, Victoria Katrina; (2019) Participant expectations and experiences of using the nominal group technique (NGT) in a NICE healthcare guideline: a pilot study. Doctoral thesis (D.Clin.Psy), UCL (University College London).

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Abstract

Aims: This is a feasibility pilot study that aimed to capture committee member and technical team experiences of current informal consensus practices, previous experiences of formal consensus methods, and expectations for the planned use of the Nominal Group Technique (NGT) formal consensus method. Method: Twelve participants, including committee and technical team members across two guideline groups engaged in semi-structured interviews before using NGT. All of the committee members of one guideline group then answered Likert-scale questions about their experience after using NGT. Results: Themes were extracted from the interviews and corroborated by the quantitative data. Themes included: Formal consensus (credibility, effort and resource intensiveness), Methodology (guideline interpretation and implementation, interpretation of evidence, and the restrictiveness of NICE process), Group processes (management of expertise, anonymity, leadership, and discussion), and Continuity of group members. Data were further analysed in the context of participant professional background. Conclusions: Participants identified beneficial elements across formal and informal consensus approaches, and it is likely a hybrid of methods is best suited to healthcare guidelines given their task of combining diverse and complex knowledge to achieve specific guidelines. The results are interpreted in the context of theory and recommendations are made on the future use and conduct of consensus methods.

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