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arXiv · 2608.03533

Designing and Evaluating Granular Consent for Data Sharing in Cardiac Disease Prevention

Pavithren V S Pakianathan·Rania Islambouli·Magenta Jade Shipsey·Laura Maaß·Jan Smeddinck
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Abstract

Dynamic consent can promise end users with greater control, but little is known about how older adults with chronic conditions navigate the tradeoff between control and burden in granular consent mechanisms in health data life-cycles. Using a two-stage design process we evaluated this tradeoff. An expert workshop (n=5) informed the design requirements for granular dynamic consent prototype. We evaluated single step vs multi-step granularity in dynamic consent using prototypes with cardiac patients (n=7) using a mixed-methods study. Quantitative measures showed no significant differences between low- and high-granularity consent screens in usability, workload, perceived information control or willingness to share data. However, qualitative findings revealed a control-burden paradox and trust-dependent engagement with granularity. Participants sought greater transparency and control over AI-mediated data processing. We contribute implications for designing granular consent in health data life-cycles.

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Pavithren V S Pakianathan, Rania Islambouli, Magenta Jade Shipsey, Laura Maaß, Jan Smeddinck. 2026-08-04. Designing and Evaluating Granular Consent for Data Sharing in Cardiac Disease Prevention. https://doi.org/10.18420/muc2026-mci-wip-337

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