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Results of the System Usability Scale (SUS), where 1 means “unusable” and 5 means “very usable,” and the Simulator Sickness Questionnaire (SSQ), where 1 means “None” and 4 means “Severe” side effects.
| Study group | SUS, mean (SD) | SSQ, mean (SD) |
| Young | 4.41 (0.49) | 1.42 (0.45) |
| Elderly | 4.46 (0.73) | 1.27 (0.24) |
| Stroke | 4.73 (0.44) | 1.05 (0.10) |
