Table 1.
Survey scales and items, their source, and internal consistencies. (For precise item wording, see Appendix B)
| Scale and items | Source | Cronbach’s alpha |
|---|---|---|
| Perceived ease of use, expanded (6 items) • Clear and understandable • Easy to use • Requires a lot of mental effort • Easy to get it to do what I want • Easy to learn • Easy to navigate |
TAM; Venkatesh & Morris [55] + two new items created based on usability definitions (learnability, navigability) [43] |
0.873 |
| Perceived usefulness, traditional (4 items) • Improves job performance • Increases productivity • Enhances effectiveness in job • Useful in job |
TAM; Venkatesh & Morris [55] | 0.929 |
| Perceived usefulness for patient/family involvement, contextualized (4 items) • Improves patient/family interaction • Improves sharing information with family • Improves communication with family • Improves family engagement |
Newly created for study, based on nursing TAM; Holden et al. [22] | 0.941 |
| Perceived usefulness for care delivery, contextualized (4 items) • Improves patient care • Improves information organization • Improves access to patient information • Improves sharing info with care team |
Nursing TAM; Holden et al.,[22] and adapted to the study context | 0.916 |
| Social influence, institutional (3 items) • Institution thinks I should use it • Supervisors think I should use it • Colleagues think I should use it |
Modified from TAM research; Venkatesh et al.,[56] based on normative IT use research; Holden [36] | 0.891 |
| Social influence, patient/family (1 item) • Patients/families like that I use it |
Nursing TAM; Holden et al. [22] | n/a |
| Perceived training on system (2 items) • Received adequate training • Training was clear |
Nursing TAM; Holden et al., [22] based on Bailey & Pearson, [57] and adapted to the study context | 0.908 |
| Satisfaction with system (2 items) • Satisfied with system • Would recommend it to others |
Nursing TAM; Holden et al.[22] | 0.883 |
| Intention to use system (2 items) • Intend to use in next 6 months • Want to use it |
TAM; Venkatesh & Morris [55]; 2 item version based on Holden et al. [22] | 0.903 |
| Complete use of system (2 items) • Use all available features • Skip/ignore parts (reverse scored) |
Nursing TAM; Holden et al., [22] adapted to the study context | 0.615 |