Table 1.
Detailed ratings of the System Usability Scale (SUS), consisting of ten questions
| SUS item | Rater 1–8 | |||||||
|---|---|---|---|---|---|---|---|---|
| 1. I think that I would like to use this system frequently. | 5 | 5 | 3 | 4 | 4 | 4 | 4 | 3 |
| 2. I found the system unnecessarily complex. | 1 | 2 | 1 | 3 | 3 | 2 | 3 | 2 |
| 3. I thought the system was easy to use. | 5 | 5 | 4 | 4 | 3 | 3 | 4 | 4 |
| 4. I think that I would need the support of a technical person to be able to use this system. | 2 | 1 | 1 | 2 | 2 | 1 | 3 | 2 |
| 5. I found the various functions in this system were well integrated. | 5 | 3 | 3 | 4 | 4 | 3 | 4 | 4 |
| 6. I thought there was too much inconsistency in this system. | 1 | 2 | 3 | 2 | 2 | 2 | 3 | 2 |
| 7. I would imagine that most people would learn to use this system very quickly. | 5 | 4 | 4 | 4 | 4 | 4 | 3 | 3 |
| 8. I found the system very cumbersome to use. | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 |
| 9. I felt very confident using the system. | 4 | 4 | 4 | 3 | 5 | 4 | 4 | 3 |
| 10. I needed to learn a lot of things before I could get going with this system. | 2 | 1 | 1 | 1 | 2 | 3 | 1 | 3 |
| SUS score | 92.5 | 85 | 75 | 72.5 | 72.5 | 70 | 67.5 | 65 |
Notes: Each cell is an integer within a Likert scale with 1 indicating “highly disagree” and 5 indicating “highly agree”. Bold font indicates SUS sum.