- The System Usability Scale score by 10 experts on Diabetic Retinopathy Health Education Programme webpage.
| Items | Score by 10 experts | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| E1 | E 2 | E 3 | E 4 | E 5 | E 6 | E 7 | E 8 | E 9 | E 10 | |
| 1. I would use this application (app) often. | 5 | 5 | 5 | 4 | 4 | 4 | 4 | 3 | 3 | 4 |
| 2. I found the app unnecessarily complex. | 2 | 2 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 2 |
| 3. I found the app easy to use. | 3 | 4 | 4 | 4 | 4 | 5 | 5 | 4 | 4 | 4 |
| 4. I think help from technical support would be needed to be able to use this app. | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 1 |
| 5. I thought the different functions of the app were well integrated. | 3 | 4 | 4 | 4 | 4 | 4 | 4 | 3 | 3 | 3 |
| 6. I thought there was great inconsistency in this app. | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 7. I would imagine that the majority of people would quickly learn how to use this app. | 4 | 4 | 4 | 4 | 5 | 5 | 5 | 5 | 5 | 4 |
| 8. I found the app very hard to use. | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 1 |
| 9. I felt confident using this app. | 4 | 4 | 4 | 4 | 4 | 4 | 5 | 5 | 5 | 5 |
| 10. I needed to learn a series of things before I could use the app. | 1 | 2 | 1 | 2 | 2 | 2 | 1 | 1 | 1 | 1 |
| The score for each expert | 80 | 83 | 85 | 80 | 80 | 83 | 88 | 80 | 80 | 85 |
| Average score | 83 | |||||||||