Digital Behavior Change Interventions (DBCIs) are supporting development of
new health behaviors. Evaluating their effectiveness is crucial for their
improvement and understanding of success factors. However, comprehensive
guidance for developers, particularly in small-scale studies with ethical
constraints, is limited. Building on the CAPABLE project, this study aims to
define effective engagement with DBCIs for supporting cancer patients in
enhancing their quality of life. We identify metrics for measuring engagement,
explore the interest of both patients and clinicians in DBCIs, and propose
hypotheses for assessing the impact of DBCIs in such contexts. Our findings
suggest that clinician prescriptions significantly increase sustained
engagement with mobile DBCIs. In addition, while one weekly engagement with a
DBCI is sufficient to maintain well-being, transitioning from extrinsic to
intrinsic motivation may require a higher level of engagement.

数字行为变化干预（DBCIs）在支持新的健康行为方面发挥作用。本研究旨在通过识别衡量参与度的度量标准、探索患者和临床医生对 DBCIs 的兴趣，并提出在此类情境中评估 DBCIs 影响的假设，为支持癌症患者提高生活质量定义有效的 DBCIs 参与方式。研究结果表明，临床医生的指示显著增加了与移动 DBCIs 的持续参与。此外，尽管每周一次的 DBCIs 参与足以维持幸福感，但从外部动机转变为内在动机可能需要更高水平的参与。