Usability Evaluation of NOW Interactions

This paper presents the results of two user studies on the suitability of NOW Interactions, a novel, push notification based mobile communication technique designed to lower the threshold for responding to information inquiries by combining a reminder, a request, and a response into one interaction, for future integration into medical diaries and health apps, through evaluating adherence, user experience, and user acceptance. Both studies comprised quantitative usability tests, interviews, and TWEETS engagement evaluations. Main findings show a 71% adherence rate to initial notifications that increased to 98% for subsequent notifications. Participants reported on particularly valuing the direct response feature of NOW Interactions, generating a positive experience. Furthermore, feedback indicated acceptance of NOW Interactions, especially when envisioned incorporated into essential medical diary apps. Based on the findings from the present user studies, the potential of NOW Interactions for integration into medical diaries and health apps is strengthened.