Table 2 ANSWER usability testing results
| Â | All (n = 15) | Cycle 1: Before modification (n = 10) | Cycle 2: After modification (n = 5) |
|---|---|---|---|
Time to complete ANSWER in minutes (SD) | 56.08 (34.80) | 55.50 (37.98) | 57.00 (33.28) |
Modified system usability scale items (SD) | Â | Â | Â |
(1 = Strongly disagree; 5 = Strongly agree): | |||
1. I liked using ANSWER as a tool for making an informed decision about using methotrexate as a treatment option for my RA | 4.13 (1.06) | 4.20 (1.23) | 4.00 (0.71) |
2. I found ANSWER unnecessarily complex | 1.20 (0.56) | 1.10 (0.32) | 1.40 (0.89) |
3. I thought ANSWER was easy to use | 4.07 (1.34) | 3.80 (1.55) | 4.60 (0.55) |
4. I think I would need the support of a technical person to be able to use ANSWER | 1.60 (1.06) | 1.70 (1.25) | 1.40 (0.55) |
5. I found the content and navigation in ANSWER was well integrated | 3.73 (1.10) | 3.60 (1.27) | 4.00 (0.71) |
6. I thought there was too much inconsistency between the design and navigation of ANSWER | 1.87 (1.19) | 1.60 (0.84) | 2.40 (1.67) |
7. I would imagine that most patients with RA would learn to use ANSWER very quickly | 4.47 (1.06) | 4.50 (1.27) | 4.40 (0.55) |
8. I found ANSWER very cumbersome to use | 1.73 (1.39) | 1.50 (1.27) | 2.20 (1.64) |
9. I would be very confident using ANSWER | 4.13 (1.19) | 4.00 (1.41) | 4.40 (0.55) |
10. I would need to learn a lot of things about using computers before I could get going with ANSWER | 1.67 (0.90) | 1.70 (1.06) | 1.60 (0.55) |
Total System Usability Scale score (SD) | 81.17 (13.53) | 81.25 (14.92) | 81.00 (11.81) |
(Scores of the 10 items were transformed into a summary score ranging from 0 to 100; higher = more user friendly) |