Unsupervised robot-assisted rehabilitation after stroke: feasibility, effect on therapy dose, and user experience

Table 2 Results of the descriptive statistics and paired samples Wilcoxon test for the usability metrics

Outcome measure	Usability 1		Usability 2		Difference		Wilcoxon test: p-value
Outcome measure	Mean	Range	Mean	Range	Mean	Range	Wilcoxon test: p-value
SUS	79.8	55.0- 100.0	85.0	35.0-100.0	5.2	-25.0-30.0	ns
TLX	40.3	15.0–60.0	39.2	30.0-53.3	-1.1	-21.7-21.7	ns
PSSUQ	2.0	1.1–2.8	2.0	1.1–4.9	0.0	-1.2-2.5	ns

SUS: System Usability Scale. TLX: raw Task Load Index. PSSUQ: Post-Study System Usability Questionnaire. ns: non-significant

ISSN: 1743-0003