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Table 1 Survey scales and items, their source, and internal consistencies. (For precise item wording, see Appendix B)

From: Nurses’ perceptions, acceptance, and use of a novel in-room pediatric ICU technology: testing an expanded technology acceptance model

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

  1. TAM technology acceptance model; optimal Cronbach’s alpha value is > 0.70 and higher values are indicative of internal consistencies; the response scale was 0 (not at all), 1 (a little), 2 (some), 3 (a moderate amount), 4 (pretty much), 5 (quite a lot), 6 (a great deal), and don’t know [22, 25]