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Developing quality fidelity and engagement measures for complex health interventions
Holly Walton1, Aimee Spector2, Morgan Williamson3
1Department of Applied Health Research, University College London, UK.
British Journal of Health Psychology
|November 7, 2019
Summary
Developing high-quality fidelity and engagement measures is crucial for assessing complex health interventions. This study presents a five-step method to create reliable checklists for researchers, providers, and participants, enhancing intervention evaluation.
Area of Science:
- Health services research
- Intervention science
- Psychometrics
Background:
- Evaluating the effectiveness of health interventions requires assessing both fidelity (delivery as planned) and engagement (participant involvement).
- Existing methods for measuring fidelity and engagement often lack reported psychometric and implementation qualities.
- High-quality measures are essential for accurate interpretation of intervention outcomes.
Purpose of the Study:
- To outline a systematic five-step method for developing quality measures of fidelity and engagement for complex health interventions.
- To provide a practical framework for creating reliable fidelity checklists applicable to various stakeholders (researchers, providers, participants).
- To enhance the confidence in interpreting outcomes from fidelity and engagement studies.
Main Methods:
- A five-step systematic approach was employed to develop fidelity and engagement measures.
- Steps included reviewing existing measures, analyzing intervention components, developing checklists and coding guidelines, obtaining feedback, and piloting/refining measures.
- The method was applied in a fidelity study for the Promoting Independence in Dementia (PRIDE) intervention.
Main Results:
- Three reliable fidelity checklists were successfully developed for the PRIDE intervention.
- Checklists were created in two versions: one for participants and another for researchers/providers, accommodating different user needs.
- The developed measures demonstrated reliability for assessing fidelity and engagement.
Conclusions:
- The proposed five-step method yields psychometrically robust and implementable measures for complex health interventions.
- These measures are suitable for diverse target audiences, facilitating consistent fidelity and engagement assessment.
- Prioritizing quality in measure development strengthens the validity of intervention outcome interpretations.
Keywords:
complex health interventiondementiaengagementfidelity of deliveryimplementationmeasurespsychometricqualityMore Related Videos
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