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Increasing Retention in a Trial by Supporting Basic Psychological Needs for Autonomy, Competence and Relatedness:
Anne Poder Petersen1,2, Johannes Martin Schmid1,2, Bjarke Hviid-Vyff1,2
1Department of Respiratory Diseases and Allergy, Aarhus University Hospital, Aarhus, Denmark.
Scandinavian Journal of Caring Sciences
|February 27, 2026
Summary
This study developed a digital intervention to improve participant retention in allergy trials by supporting psychological needs. The web app aims to enhance motivation and engagement through features like flexible data entry and personalized feedback.
Area of Science:
- Behaviour change science
- Psychological interventions
- Digital health technology
Background:
- Most retention interventions lack strong evidence and behavior change science principles.
- Self-Determination Theory (SDT) posits that supporting autonomy, competence, and relatedness enhances motivation and well-being.
Purpose of the Study:
- To develop a need-supportive digital intervention for a randomized allergy trial.
- The intervention aims to increase participant retention by supporting psychological needs.
Main Methods:
- Applied the Medical Research Council's framework for complex interventions.
- Iterative development process involving patient partners, including evidence review, theory identification, interviews, workshops, prototyping, and program theory.
Main Results:
- Developed a web app to support participants' basic psychological needs.
- Features include flexible data entry, positive feedback, pollen forecasts, progress tracking, and allergy information.
Conclusions:
- The study provides insights into using need-supportive technology for randomized trials.
- The developed web app is ready for a feasibility test in an allergy trial.
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