Table 2.
Descriptive statistics for the System Usability Scale (N=60).
| Measure | Values, n (%) | Values, mean (SD; range) | |
| System Usability Scale overall score | 53 (88) | 78.89 (15.64; 37.5-100) | |
| System Usability Scale individual itemsa | |||
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1. I think that I would like to use this system frequently. | 53 (88) | 2.48 (1.33; 0-4) |
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2. I did not find the system unnecessarily complex.b | 53 (88) | 3.09 (1.15; 0-4) |
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3. I thought the system was easy to use. | 53 (88) | 3.28 (0.83; 1-4) |
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4. I do not think that I would need the support of a technical person to be able to use this systemb | 53 (88) | 3.78 (0.54; 2-4) |
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5. I found the various functions in this system were well integrated. | 53 (88) | 2.69 (1.11; 0-4) |
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6. I did not think there was too much inconsistency in this system. | 53 (88) | 3.23 (1.07; 0-4) |
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7. I would imagine that most people would learn to use this system very quickly. | 53 (88) | 3.15 (0.88; 0-4) |
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8. I did not find the system very awkward to use.b | 53 (88) | 3.17 (0.93; 1-4) |
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9. I felt very confident using the system. | 53 (88) | 3.26 (0.76; 2-4) |
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10. I did not need to learn a lot of things before I could get going with this system.b | 53 (88) | 3.50 (0.72; 2-4) |
aQuestions were rated on a 5-point Likert scale from 0 “Strongly disagree” to 4 “Strongly agree.”
bItems were initially reverse coded but have been recoded to be on the same scale as other items. The text of these questions has been revised from the original items to reduce confusion.