Technical Feasibility of Supervision of Stretching Exercises by a Humanoid Robot Coach for Chronic Low Back Pain: The R-COOL Randomized Trial
Table 3
Within- and between-group comparisons of utility and satisfaction evaluated by the participants.
Robot
Control
Between-group
value
SUS
D2
64 (9.5)
85 (5.4)
0.007
D21
58 (11.8)
87 (9.4)
<0.001
Within-group value
0.22
0.19
Satisfaction
D2
3.5 (0.6)
5 (0.3)
<0.001
D21
2.5 (0.8)
5 (0.4)
<0.001
Within-group value
0.19
0.83
Pursue intention
D2
4 (0.8)
5 (0.4)
0.01
D21
2 (0.8)
4 (0.3)
<0.001
Within-group value
0.063
0.74
Values presented are medians (IQR). SUS: system usability scale. Total SUS scores are calculated out of 100 following a specific method [16] that accounts for positively and negatively worded questions. A points indicates ‘above average’ usability [17, 18].
