International expert perspectives on the principles and components of effective intervention for adults who stutter.

These findings emphasize the complexity of stuttering intervention, the need for individually tailored treatments and the role of multiple factors, beyond therapeutic technique, that influence treatment outcomes. Findings also demonstrate the benefit of collecting practice-based evidence to support clinical decision-making and intervention evaluation. What this paper adds What is already known on the subject Evidence-based practice involves the synthesis of multiple forms of knowledge, including research, practice and patient evidence to support clinical decision-making and intervention evaluation. Research evidence for stuttering intervention effectiveness is the dominant form of knowledge in stuttering literature, while other forms such as practice and patient evidence are less represented. What this paper adds to existing knowledge This study provides valuable practice evidence for effective stuttering intervention components, including individually tailored intervention, person-related factors and therapeutic alliance. It highlights the need to consider multiple forms of knowledge to guide the design and evaluation of intervention. What are the potential or actual clinical implications of this work? Clinicians should adopt a person-centred care approach when designing and evaluating an intervention for adults who stutter. Multiple factors beyond therapeutic technique influence treatment outcomes and should be incorporated into any intervention for adults who stutter.