Table 5 NFB user experience Q1, Q2 presented as mean ± STD (median), Q3, Q4 presented as percentage

Q1. How often did you feel that you were in control of neurofeedback?

1 never

7.7 ± 2.3(8)

10 always

Q2. How stressful was it the first time you had to use the device in your own at home?

1 not stressful at all

10 extremely stressful

2.4 ± 2.5 (1)

Q3. Did the pain treatment interfere with your daily routine?

a) interfered a lot,

b) interfered,

c) sometimes interfered,

d) Did not interfere

at all

-

-

37.5%

62.5%

Q4. How long on average did it take you/your caregiver to setup the whole system?

a) 5–10 min,

b)10–15 min

c) 15-30 min

d) > 30 min

78%

22%

Q5. What factors influenced how often you used the device? (circle as much as appropriate)

a) Intensity of pain,

b) Free time,

c) Mood,

d) Available time of my caregiver,

5

6

3

3

e) Other health problems

f) Other (explain).

9

0