Table 3.
Five-factor Structure Compared with Two-factor Structure Usability Subscales
| Five-factor Structure Subscales | Questionnaire Items | Two-factor structure subscales |
|---|---|---|
| Usefulness | ||
| 1 | Telehealth improves my access to healthcare services | Accessibility |
| 2 | Telehealth saves me time traveling to a hospital or specialist clinic | Accessibility |
| 3 | Telehealth provides for my healthcare needs | Accessibility |
| Ease of Use | ||
| 4 | It was simple to use this system | Accessibility |
| 5 | It was easy to learn to use the system | Accessibility |
| 6 | I believe I could become productive quickly using this system | Accessibility |
| 7 | The way I interact with this system is pleasant | Accessibility |
| 8 | I like using the system | Utility |
| 9 | The system is simple and easy to understand | Accessibility |
| Effectiveness | ||
| 10 | This system is able to do everything I would want it to be able to do | Accessibility |
| 11 | I could easily talk to the clinician using the telehealth system | Accessibility |
| 12 | I could hear the clinician clearly using the telehealth system | Accessibility |
| 13 | I felt I was able to express myself effectively | Utility |
| 14 | Using the telehealth system, I could see the clinician as well as if we met in person | Utility |
| Reliability | ||
| 15 | I think the visits provided over the telehealth system are the same as in-person visits | Accessibility |
| 16 | Whenever I made a mistake using the system, I could recover easily and quickly | Utility |
| 17 | The system gave error messages that clearly told me how to fix problems | Utility |
| Satisfaction | ||
| 18 | I feel comfortable communicating with the clinician using the telehealth system | Utility |
| 19 | Telehealth is an acceptable way to receive healthcare services | Utility |
| 20 | I would use telehealth services again | Utility |
| 21 | Overall, I am satisfied with this telehealth system | Utility |