Table4.

Constructs, salient semi-structured questions, and patient responses.

Constructs/themes based on i-PARIHS	AFO interview questions	Patient statement/answers
Relative advantage	Have you heard of other things that could help and how does the AFO compare?	“They did help when I started wearing them and my health is worse now, so they got me the scooter. I use the scooter a lot.”
Compatibility	How well did wearing the AFO fit with your lifestyle?	“They’re a bit tedious with some stair steps and a bit tedious while driving but nothing I can’t handle. I wear them every day, but I only do it for about 15 minutes at night when I use the treadmill.”
Usability (Barriers: Physical discomfort and Poor health)	Tell me about anything that made it (makes it) harder to use your AFO?	“It cuts the inside of my foot. Yeah, I could try them more often, they still hurt my feet a lot. Going up and downstairs is really difficult because I can’t bend my ankle”. “I’ve had some medical problems and I’ve been in the hospital…I pretty much stopped wearing them.”
Observability	What were some of the benefits you could see from wearing the AFO?	“But yeah, the walking I can go a little bit further with these on. So, they do help. And plus, ya know, they do help me stand up straight. And uh, I can walk straighter”. “It seems to help me walk a little better and feels more comfortable to walk.”
Cost-effectiveness	What changes, if any, in your out-of-pocket cost were associated with wearing the AFO?	“I had no extra cost with these braces…they took care of it”.
Trialability	Tell me about when you first tried the AFO. Were you able to test it out a little bit before you decided to use it?	“Oh yes, when I started using it, it wasn’t bad.”.