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User Perceptions of Individually-Tailored Health Information in Digital Apps: Development of a Scale
Raymond L Ownby1, Rosemary Davenport1, Joshua Caballero2
1Center for Brain Health and Longevity, Department of Psychiatry and Behavioral Medicine, Nova Southeastern University, Fort Lauderdale, Florida USA.
Medrxiv : the Preprint Server for Health Sciences
|November 24, 2025
Summary
The Success in Tailoring (SIT) scale measures user perception of personalized health information. This scale is reliable and valid for assessing tailoring effectiveness in digital health interventions.
Area of Science:
- Digital Health
- Health Communication
- Psychometrics
Background:
- Personalized health information is more effective than generic advice due to increased relevance.
- Most digital health studies do not quantify the impact of information tailoring on outcomes.
- A validated measure is needed to assess user perception of tailored health information.
Purpose of the Study:
- To develop and validate the Success in Tailoring (SIT) scale.
- To assess how users perceive health information as relevant, useful, and actionable.
- To determine if the SIT scale can predict changes in health behavior outcomes.
Main Methods:
- Developed the SIT scale based on relevance theory and the Elaboration Likelihood Model.
- Administered the SIT scale to participants in a digital health intervention study.
- Conducted psychometric analyses including reliability, factor structure, and validity assessments.
Main Results:
- The SIT scale demonstrated good internal consistency and acceptable test-retest reliability.
- Confirmatory factor analysis supported a bifactor solution, indicating a robust general factor.
- SIT scores correlated significantly with related concepts and predicted changes in self-efficacy and activation.
Conclusions:
- The SIT scale provides a reliable and valid method for measuring perceived tailoring in digital health.
- The scale can help explain the relationship between personalization and health outcomes in digital interventions.
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