Table 4.

Usability evaluation questionnaire of walking devices

No.	Domain	Item	Strongly disagree	Disagree	Neutral	Agree	Strongly agree
1	Safety	Were you able to wear the device easily?	①	②	③	④	⑤
2	Safety	Do you think that it is safe to use the device?	①	②	③	④	⑤
3	Safety	Was your trunk or legs fixed well?	①	②	③	④	⑤
4a)	Safety	Did you have any physical abnormalities during or after using the device? (example: skin changes, pain, swelling)	①	②	③	④	⑤
5a)	Safety	Were you at risk of hurting yourself by using the device?	①	②	③	④	⑤
6	Safety	Are you able to handle emergencies, such as abnormalities with your conditions or device malfunctioning?	①	②	③	④	⑤
7	Effects	Have you had positive changes in muscle strength?	①	②	③	④	⑤
8	Effects	Have you had positive changes in your range of motion?	①	②	③	④	⑤
9	Effects	Have you had positive changes in your ability to walk?	①	②	③	④	⑤
10	Effects	Have you had positive changes with pain?	①	②	③	④	⑤
11	Effects	Have you had positive changes with bowel functions?	①	②	③	④	⑤
12	Effects	Have you had positive changes in your psychological state?	①	②	③	④	⑤
13	Efficiency	Do you think that walking with the device is similar to actual walking?	①	②	③	④	⑤
14	Efficiency	Was it easy to adjust to using the device?	①	②	③	④	⑤
15a)	Efficiency	Were you overly tense when using the device?	①	②	③	④	⑤
16a)	Efficiency	Did you find the device difficult to use?	①	②	③	④	⑤
17a)	Satisfaction	Did you feel excessive fatigue while using the device?	①	②	③	④	⑤
18	Satisfaction	Was the device worn appropriately on your body?	①	②	③	④	⑤
19	Satisfaction	Was it comfortable to wear the straps, buckles, and pads?	①	②	③	④	⑤
20	Satisfaction	Do you think that using the device increases your willingness for rehabilitation?	①	②	③	④	⑤
21	Satisfaction	Do you want to continue using the device?	①	②	③	④	⑤
22	Satisfaction	Would you recommend the device to someone who has a similar disease?	①	②	③	④	⑤
23	Satisfaction	Are you satisfied with the device overall?	①	②	③	④	⑤

^a)Used to reverse the response score.