Table 1.
Definitions of the Health-ITUEM usability dimensions used for deductive data analysis (adapted based on 49, 51, and 52).
| Usability dimensions | Definitions | Examples (coding) |
|---|---|---|
| IMPACT | ||
| Health impact | Expected impacts of the Step-by-Step app on the mental health of Syrian refugees. | G: “It will indeed help people, especially those with mental problems because those people are really looking for help.” (+) |
| Information needs | The extent to which information content meets user's needs. |
S: “Sometimes you don't know what is going on with you, but with such an app you can get an idea.” (+) S: “There are a lot of repeated information and ideas.” (–) |
| Other outcomes | Other system-specific outcomes representing higher levels of expectations. | S: “If I really need something like this I could browse the internet to find out the solution to my problem or I could visit a psychologist.” (–) |
| PERCEIVED USEFULNESS | ||
| Performance speed | Temporal efficiency when completing tasks within the app (e.g., learning from a narrative or practicing a technique). | S: “It should be short, clear, concentrated and up-to-date and shouldn't need a long time to use or it will be boring.” (s) |
| Flexibility and customizability | Providing alternative ways for accomplishing tasks, which allows different users to operate the system as preferred. |
G: “I can use it at home anytime I want.” (+) E: “The availability of audio for those who cannot read.” (+) |
| PERCEIVED EASE OF USE | ||
| Learnability | First-time users are easily able to understand and operate the Step-by-Step app. | S: “It is easy to use, simple language and the vocabularies are not difficult everyone can understand them.” |
| Competency | Users express confidence in their ability to use the Step-by-Step app. | (This theme did not occur in the data.) |
| Memorability | Users can remember easily how to perform tasks through the Step-by-Step app after not using it for a while. | (This theme did not occur in the data.) |
| USER CONTROL | ||
| Error prevention | The Step-by-Step app offers error management, such as error messages as feedback, error correction through undo function, or error prevention, such as instructions or reminders, to assist users performing tasks. | (This theme did not occur in the data.) |
Responses were coded as either positive (+), negative (–) or suggestion (s), E, comment from Egypt; G, comment from Germany; S, comment from Sweden.