Table 5.
The Post-Study System Usability Questionnaire (N = 30).
| Subscales | Items | Mean (SD) a | Median | Range b |
|---|---|---|---|---|
| System Usefulness | Overall, I am satisfied with how easy it is to use this system. | 1.4 (0.62) | 1 | 1-3 |
| It was simple to use this system. | 1.53 (0.82) | 1 | 1-4 | |
| I could effectively follow the system to learn how to perform the lymphatic exercises. | 1.23 (0.51) | 1 | 1-3 | |
| I felt comfortable using this system to learn how to perform the lymphatic exercises. | 1.33 (0.96) | 1 | 1-6 | |
| It was easy to learn the lymphatic exercises using this system. | 1.17 (0.46) | 1 | 1-3 | |
| I believe I could learn how to perform the lymphatic exercises correctly using this system. | 1.37 (0.99) | 1 | 1-6 | |
| Interface Quality | The system gave error messages that clearly told me how to fix problems. | 1.4 (0.81) | 1 | 1-5 |
| Whenever I made a mistake in performing the lymphatic exercises, the system immediately told me so. | 1.53 (0.82) | 1 | 1-4 | |
| The information (such as on-screen messages) provided with this system was clear. | 1.23 (0.5) | 1 | 1-3 | |
| Information quality | It was easy to follow the system to learn the correct way to perform the lymphatic exercises. | 1.53 (1.07) | 1 | 1-6 |
| The information provided for the system was easy to understand. | 1.33 (0.55) | 1 | 1-3 | |
| The information was effective in helping me to learn to correctly perform the lymphatic exercises. | 1.2 (0.48) | 1 | 1-3 | |
| The organization of information on the system screens was clear. | 1.2 (0.5) | 1 | 1-3 |
a
SD: Standard Deviation.
b
On a scale of 1 to 7, 1 represents strongly agree and 7 represents strongly disagree.