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. 2017 Jul 20;4(2):e6. doi: 10.2196/rehab.7085

Table 2.

Results of the usability questionnaires (n=6). Technology Acceptance Model-2 (TAM-2) and Usefulness, Satisfaction, and Ease of use (USE) scores range from 1 to 5 (best score). System Usability Scale (SUS) ranges from 0 to 100 (best score). SUS score above 80 indicate highly usable systems.

Questionnaire Mean Standard
deviation
TAM-2a: Intention to use 4.2 1.5
TAM-2: Perceived Usefulness 3.9 0.8
TAM-2: Perceived Ease of Use 4.4 0.5
USEb: Ease of Learning 4.2 0.8
USE: Satisfaction 4.7 0.8
SUSc 88 6

aTAM-2: Technology Acceptance Model-2.

bUSE: Usefulness, Satisfaction, and Ease of use.

cSUS: System Usability Scale.