Statistical methods
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Both patient groups filled out the Quebec User Evaluation of Satisfaction with assistive Technology (QUEST) [As the RobExReha-Patients group used the HoloLens for the gaming environment, they additionally filled out the “presence in augmented reality” (pAR) questionnaire (adapted from [The therapists completed a questionnaire consisting of the same adapted device subscale of the QUEST as the patients, the system usability scale (SUS) [The results were evaluated descriptively and the results of QUEST and RTLX from the RobExReha-Patients and the Reference Group were compared using Mann-Whitney U-test. Due to the exploratory character of the study, no correction for multiple comparisons was done. Analyses were done in Matlab (The MathWorks Inc., US) and SPSS (IBM, US). The alpha level was set to 0.05 for all analyses. Data is presented as either the mean (± standard deviation) or the median (min-max).