Design: Two-group parallel design (treatment vs placebo), double-blinded feasibility study. Participants: 31 adults who stutter.
Intervention: Attention training via an online probe detection task in which the stimuli were images of faces displaying neutral and disgusted expressions. Main outcome measures Psychological measures: Structured Clinical Interview Global Assessment of Functioning score; Liebowitz Social Anxiety Scale; Social Phobia and Anxiety Inventory; State-Trait Anxiety Inventory; Unhelpful Thoughts and Beliefs about Stuttering. Speech fluency: percent syllables stuttered. Economic evaluation: resource use questionnaire; EuroQol three-dimension questionnaire. Acceptability: Likert Scale questionnaire of experience of trial, acceptability of the intervention and randomisation procedure.
Results: Feasibility of recruitment strategy was demonstrated. Participant feedback indicated that the intervention and definitive trial, including randomisation, would be acceptable to adults who stutter. Of the 31 participants who were randomised, 25 provided data at all three data collection points.
Conclusions: The feasibility study informed components of the intervention. Modifications to the design are needed before a definitive trial can be undertaken.
Trial registration number I SRCTN55065978.
- Norwich Medical School - Professor of Medical Statistics
- Epidemiology and Public Health - Member
- Health Services and Primary Care - Member
- Norwich Clinical Trials Unit - Member
- Public Health and Health Services Research - Member
Person: Research Group Member, Academic, Teaching & Research