Principal Findings
DM2
MINOR
The aim of this study was to assess the usability of an app developed to promote initiation of behavioral change and adherence to healthy behavior in people at risk of DM2. In general, only minor changes to the functionality of Plunde was reported as necessary to improve the usability. The most critical improvement included how to delete a message as this was difficult for all except one. This function is considered as crucial since it is important to maintain control over your own data. The participants are told not to share any sensitive information; however, it may also happen that they share something else that they later on would like to delete for some reason. To make the design consistent, deleting a message and deleting a note has therefore been changed so these 2 commands are the same (swiping right). Additionally, a trashcan symbol has been added in addition to the text “delete.” Other improvements made based on the TA-sessions included how to save notes and renaming of the feature “information.” As suggested by some of the participants, the command saving has been moved to a more obvious place (right top of the interface) and a symbol for saving has been added as well. The feature “information” was suggested to be changed to “inspiration.” Since this word does not cover the intended content, the new label “knowledge assembly” was landed on after a discussion in the research group. To further improve the usability by making the design more appealing, small changes such as colors and icons have been made.Based on the results, finding and changing reminders that are linked to the tasks also should be considered to be changed. However, as Plunde will be used in research where it is not desirable for participants to change goals, tasks, or reminders throughout an intervention period, we have chosen not to change this function at this time. Before implementation of Plunde to clinical practice, this should be considered to increase the usability. Some of the findings from this TA study were not relevant to the upcoming small scale RCT feasibility study but might have to be considered in potential upcoming studies as well as for the implementation of Plunde.