Table 1.
Summary of the Health-ITUESa questionnaire.
| Items | First testing, mean (SD) |
Second testing, mean (SD) |
|
| Impact (Cronbach α: .863) | 4.6 (0.62) | 4.5 (0.76) | |
|
|
1. I think iCAREb can be a positive addition for heart health for patients living with CHDc. |
4.6 (0.71) | 4.4 (0.74) |
|
|
2. I think iCARE can improve the quality of life of persons living with CHD. |
4.6 (0.61) | 4.6 (0.61) |
|
|
3. iCARE is an important part of meeting my information needs related to self-management of CHD-related risk factors. |
4.5 (0.76) | 4.4 (0.96) |
| Perceived usefulness (Cronbach α: .901) | 4.6 (0.51) | 4.4 (0.63) | |
|
|
4. Using iCARE makes it easier to self-manage my CHD-related risk factors. |
4.5 (0.70) | 4.5 (0.67) |
|
|
5. Using iCARE enables me to self-manage my CHD-related risk factors more quickly. |
4.6 (0.60) | 4.5 (0.67) |
|
|
6. Using iCARE makes it more likely that I can self-manage my iCARE- related risk factors. |
4.6 (0.60) | 4.4 (0.88) |
|
|
7. Using iCARE is useful for self-management of CHD-related risk factors. |
4.6 (0.70) | 4.6 (0.62) |
|
|
8. I think iCARE presents a more equitable process for self-management of CHD-related risk factors. |
4.6 (0.70) | 4.5 (0.72) |
|
|
9. I am satisfied with iCARE for self-management of CHD-related risk factors. |
4.6 (0.68) | 4.5 (0.74) |
|
|
10. I self-manage my CHD-related risk factors in a timely manner because of iCARE. |
4.5 (0.77) | 4.3 (0.83) |
|
|
11. Using iCARE increases my ability to self-manage my CHD-related risk factors. |
4.6 (0.63) | 4.4 (0.74) |
|
|
12. I am able to self-manage my CHD-related risk factors whenever I use iCARE. |
4.4 (0.78) | 4.3 (0.83) |
| Perceived ease of use (Cronbach α: .899) | 4.3 (0.76) | 4.2 (0.76) | |
|
|
13. I am comfortable with my ability to use iCARE. | 4.3 (0.88) | 4.3 (0.73) |
|
|
14. Learning to operate iCARE is easy for me. | 4.3 (0.90) | 4.0 (1.05) |
|
|
15. It is easy for me to become skillful at using iCARE. | 4.3 (0.95) | 4.0 (1.06) |
|
|
16. I find iCARE easy to use. | 4.5 (0.77) | 4.2 (0.96) |
|
|
17. I can always remember how to log on to and use iCARE. | 4.3 (0.97) | 4.3 (0.85) |
| User control (Cronbach α: .743) | 4.4 (0.67) | 4.2 (0.81) | |
|
|
18. iCARE gives error messages that clearly tell me how to fix problems. | 4.3 (0.91) | 4.2 (0.90) |
|
|
19. Whenever I make a mistake using iCARE, I recover easily and quickly. |
4.4 (0.89) | 4.2 (0.88) |
|
|
20. The information (such as online help, on-screen messages, and other documentation) provided with iCARE is clear. |
4.7 (0.60) | 4.2 (0.96) |
aThe Modified Health-Information Technology Usability Survey was adopted from Schnall et al [43]. ©[2021] Capital Medical University, Beijing, China. All rights reserved. Adapted with permission from the “Health IT Usability Evaluation Scale.”
biCARE: Individualized, Intelligent and Integrated Cardiovascular App for Risk Elimination.
cCHD: coronary heart disease.