Table 1 Feasibility and acceptability criteria and measures for the Fussy Eating Rescue pilot trial
Measures | Feasibility and acceptability criterion |
|---|---|
Participant retention rate | At least 80% of enrolled participants complete the 6-weeks post-intervention questionnaire |
Intervention engagement | At least 80% of intervention participants begin engaging with the app There are currently not standards of practice for what constitutes acceptable app engagement in digital health interventions for parents (58) App usage metrics will be explored and reported (e.g. session interval, session length, time in app, screen flow, retention, SMS received/read) |
Usability of the app platform | Average System Usability Scale (SUS) [58] scores meet or exceed benchmark of 81 (the average score of the final usability tests before the pilot) |
Perceived ease in using the app platform | Average mHealth App Usability Questionnaire (MAUQ) [59] scores are 80% of highest score possible |
Perceived usefulness of the app platform | Average MAUQ ease of use, usefulness, and satisfaction subindex scores are 80% of highest score possible |
Satisfaction with the app platform | Post-intervention interviews will explore further parents’ experiences using the app, including usability and acceptability, positive and negative aspects of the app, impact of the app on their life, and facilitators/barriers to using the app |