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. 2021 Aug 9;5(8):e24909. doi: 10.2196/24909

Table 2.

Descriptive statistics of usability and feasibility questionnaires.

Questionnaire Remote-guided (n=4) Stand-alone (n=7) All (N=11)

Mean (SD) Rangea Mean (SD) Range Mean (SD) Range
System Usability Scale 56.0 (5.8) 14.0 60.1 (32.2) 84.0 58.6 (25.2) 84.0
Ease of use 5.0 (1.7) 4.3 5.6 (3.8) 9.7 5.4 (3.1) 9.7
Satisfaction 5.1 (2.2) 4.8 5.2 (3.7) 9.7 5.2 (3.1) 9.7
Ease of learning 5.5 (3.2) 7.0 6.1 (4.2) 9.5 5.9 (3.7) 9.5

aRepresents the spread; the difference between the maximum and minimum values.