Table 1 Usability attributes of eCODES by age group
≤45 n = 12 | 46 to 55 n = 7 | 56 to 65 n = 6 | ≥66 n = 5 | Total n = 30 | |
|---|---|---|---|---|---|
Selected Systems Usability Scale total scores | |||||
Mean (SD) | 84 (9) | 85 (11) | 75 (7) | 68 (8) | 80 (10) |
Median (IQR) | 83 (80, 88) | 95 (80, 95) | 74 (70, 78) | 68 (60, 75) | 80 (73, 88) |
Range | 70 to 95 | 68 to 95 | 70 to 88 | 60 to 75 | 55 to 95 |
Systems Usability Scale items* | |||||
I think that I would like to use this program if I had a loved one in the ICU | 11 (92%) | 7 (100%) | 5 (83%) | 5 (100%) | 28 (93%) |
I thought the program was too complex | 0 (0%) | 0 (0%) | 0 (0%) | 0 (0%) | 0 (0%) |
I thought the program was easy to use | 11 (92%) | 7 (100%) | 5 (83%) | 4 (80%) | 27 (90%) |
I think that I would need the support of a technical person to be able to use the program. | 0 (0%) | 0 (0%) | 0 (0%) | 1 (20%) | 1 (3%) |
I found the information and questions in the program were well integrated | 10 (%) | 7 (100%) | 6 (100%) | 5 (100%) | 28 (93%) |
I thought there was too much inconsistency in the program. | 0 (0%) | 0 (0%) | 0 (0%) | 1 (20%) | 1 (3%) |
I would imagine that most people would learn to use this program very quickly | 12 (100%) | 7 (100%) | 6 (100%) | 5 (100%) | 29 (97%) |
I found the program very cumbersome to use. | 0 (0%) | 0 (0%) | 0 (0%) | 0 (0%) | 0 (0%) |
I felt very confident using the program | 11 (92%) | 7 (100%) | 6 (100%) | 4 (80%) | 28 (93%) |
I needed to learn a lot of things before I could get going with this program. | 0 (0%) | 0 (0%) | 0 (0%) | 0 (0%) | 0 (0%) |
I was able to:** | |||||
Answer the questions in the program | 12 (100%) | 7 (100%) | 6 (100%) | 4 (80%) | 29 (97%) |
Complete the computer program | 12 (100%) | 7 (100%) | 6 (100%) | 5 (100%) | 30 (100%) |
I was satisfied with:*** | |||||
The computer program overall | 12 (100%) | 7 (100%) | 5 (83%) | 4 (80%) | 28 (93%) |
How easy it was to use the program | 12 (100%) | 7 (100%) | 6 (100%) | 4 (80%) | 29 (97%) |
The layout of the program | 11 (92%) | 7 (100%) | 6 (100%) | 4 (80%) | 29 (97%) |
The instructions | 12 (100%) | 7 (100%) | 6 (100%) | 4 (80%) | 29 (97%) |
Prefer eCODES to printed version of decision aid | 11 (92%) | 7 (100%) | 6 (100%) | 4 (80%) | 29 (97%) |