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. 2020 Apr 23;22(4):e13726. doi: 10.2196/13726

Table 4.

Usage intention, ease of use, and perceived usefulness evaluation for the different appearances regardless of the age group.

Variable Score, mean (SD)

Billie Vince Character Voice Only Overall
Usage intention 2.70 (1.25) 2.72 (1.45) 2.33 (1.26) 2.72 (1.10) 2.63 (1.27)
Ease of use 3.81 (0.65) 4.02 (0.72) 4.09 (0.64) 4.19 (0.71) 4.03 (0.69)
Usefulness 2.65 (1.32) 2.98 (1.19) 2.56 (1.27) 3.20 (1.20) 2.86 (1.25)