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Impact of Platform Design and Usability on Adherence and Retention: Randomized Web- and Mobile-Based Longitudinal Study

Impact of Platform Design and Usability on Adherence and Retention: Randomized Web- and Mobile-Based Longitudinal Study

Participants were recruited between August 2020 through July 2021, and all individuals participated for a maximum of 6 months of follow-up. Enrollment and group assignment. A total of 116 participants left this study before completing a single survey. Further, 284 participants were included in the analysis dataset. DCH: Datacubed Health. Descriptive statistics for demographic variables across each study arm are reported in Table 4. Participant demographics by study arm.

Xinrui Jiang, Michelle Timmons, Elias Boroda, Marie Onakomaiya

J Particip Med 2025;17:e50225

Long-Term Engagement of Diverse Study Cohorts in Decentralized Research: Longitudinal Analysis of “All of Us” Research Program Data

Long-Term Engagement of Diverse Study Cohorts in Decentralized Research: Longitudinal Analysis of “All of Us” Research Program Data

Specifically, this secondary analysis included individuals who enrolled after Sync4 Science launch (August, 2018) and after the BYOD Fitbit protocol being launched (November, 2020). For all cohorts, activities where participants completed the surveys were considered as “active/engaged” events. All survey questions included a “prefer not to answer” option. Survey completeness was analyzed across participants by counting the number of questions answered as “prefer not to answer”.

Vijay Yadav, Elias Chaibub Neto, Megan Doerr, Abhishek Pratap, Larsson Omberg

Interact J Med Res 2025;14:e56803

An Evaluation of the Effect of App-Based Exercise Prescription Using Reinforcement Learning on Satisfaction and Exercise Intensity: Randomized Crossover Trial

An Evaluation of the Effect of App-Based Exercise Prescription Using Reinforcement Learning on Satisfaction and Exercise Intensity: Randomized Crossover Trial

Recruitment was conducted between July 6, 2022, and August 29, 2022, and the trial was completed on November 16, 2022. During data collection, each participant was given a participant ID number when they registered with the app. The data were stored using these ID numbers. The key to the code that matched participants’ full name to their ID number was saved in an electronic password-protected file, which was stored on an encrypted drive.

Cailbhe Doherty, Rory Lambe, Ben O’Grady, Diarmuid O’Reilly-Morgan, Barry Smyth, Aonghus Lawlor, Neil Hurley, Elias Tragos

JMIR Mhealth Uhealth 2024;12:e49443