Identifying Enablers of Participant Engagement in Clinical Trials of Consumer Health Technologies: A Qualitative Study of flu@home (Preprint)
BACKGROUND Clinical trials are fraught with challenges such as inadequate enrollment, lack of fidelity to interventions, and high drop-out rates. However, such trials are essential to support large-scale implementation of crucial consumer healthcare technologies (CHTs) such as smartphone supported home diagnostic tests (Smart-HT). A rise in the recent trend of self-managing health using CHTs highlights the importance of efficient and successful CHT trials. Understanding the reasons underlying individuals’ participation in trials could inform the design and execution of future trials of CHTs. OBJECTIVE We aimed to identify the enablers of participation in clinical trials of CHTs and summarize our findings in an evidence-based framework. We used an instantiation of a specific CHT currently in trial, Smart-HT, which is an app accompanied by home-based diagnostic testing of influenza called flu@home. METHODS Based on the digital health engagement model (DIEGO) and technology acceptance model (TAM), we proposed a preliminary research framework of enablers for participants’ engagement in trials of CHTs. Further, based on the attribution theory, we categorized the enablers into dispositional and situational factors. The framework guided the confidential and semi-structured interviews and resultant transcript coding. 31 individuals who previously participated in the diagnostic accuracy pilot study of flu@home were recruited to complete the semi-structured interviews via email and received a 25$ gift card once completing the interview. RESULTS In addition to finding support and a detailed understanding of the proposed preliminary framework, we identified new themes in our analysis that extend our evidence-based framework. Situationally, we found that financial incentives and insurance status influenced trial engagement for flu@home. Motivation to advance medical research, personal innovativeness, altruism, curiosity, positive attitude, and potential to minimize doctor’s visits emerged as new dispositional enablers for trial engagement in our study. CONCLUSIONS Our findings and proposed framework provide insights into the context of trial engagement for CHTs that require testing, particularly an instantiation of Smart-HT involving testing for influenza. We suggest several trial design and trial engagement strategies to enhance these trials' financial and scientific viability, paving the way for advancements in patient care. Furthermore, our study also offers practical strategies to trial organizers to enhance participants’ enrollment and engagement in clinical trials of CHTs.