Table 2.
Exploratory factor analysis results for the 21 items on the mHealth App Usability Questionnaire designed for interactive mHealth apps (overall Cronbach alpha=0.932, 21 items). Values >0.32 for each factor are italicized.
| Item | Factor 1 | Factor 2 | Factor 3 | |
| Ease of use and satisfaction (alpha=0.895), 8 items (MAUQ_E) | ||||
|
|
I1. The app was easy to use. | 0.633 | –0.001 | 0.271 |
|
|
I2. It was easy for me to learn to use the app. | 0.234 | –0.248 | 0.268 |
|
|
I3. I like the interface of the app. | 0.729 | 0.002 | 0.010 |
|
|
I4. The information in the app was well organized, so I could easily find the information I needed. | 0.523 | –0.097 | 0.196 |
|
|
I5. I feel comfortable using this app in social settings. | 0.538 | 0.022 | 0.123 |
|
|
I6. The amount of time involved in using this app has been fitting for me. | 0.588 | –0.041 | 0.222 |
|
|
I7. I would use this app again. | 0.800 | –0.112 | –0.136 |
|
|
I8. Overall, I am satisfied with this app. | 0.855 | 0.016 | 0.136 |
| System information arrangement (alpha=0.829), 6 items (MAUQ_S) | ||||
|
|
I9. Whenever I made a mistake using the app, I could recover easily and quickly. | 0.148 | 0.057 | 0.672 |
|
|
I10. This mHealth app provided an acceptable way to receive health care services. | 0.114 | –0.189 | 0.512 |
|
|
I11. The app adequately acknowledged and provided information to let me know the progress of my action. | 0.281 | 0.007 | 0.414 |
|
|
I12. The navigation was consistent when moving between screens. | 0.178 | –0.143 | 0.466 |
|
|
I13. The interface of the app allowed me to use all the functions (such as entering information, responding to reminders, viewing information) offered by the app. | 0.111 | –0.129 | 0.473 |
|
|
I14. This app has all the functions and capabilities I expect it to have. | 0.180 | –0.250 | 0.485 |
| Usefulness (alpha=0.900), 7 items (MAUQ_U) | ||||
|
|
I15. The app would be useful for my health and well-being. | 0.235 | – 0.667 | –0.102 |
|
|
I16. The app improved my access to health care services. | 0.202 | – 0.750 | –0.165 |
|
|
I17. The app helped me manage my health effectively. | 0.308 | – 0.806 | –0.225 |
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|
I18. The app made it convenient for me to communicate with my health care provider. | –0.196 | – 0.951 | 0.109 |
|
|
I19. Using the app, I had many more opportunities to interact with my health care provider. | –0.103 | – 0.797 | 0.146 |
|
|
I20. I felt confident that any information I sent to my provider using the app would be received. | –0.046 | – 0.541 | 0.189 |
|
|
I21. I felt comfortable communicating with my health care provider using the app. | –0.033 | – 0.487 | 0.257 |