Table 1.

The questionnaire provided to the patients.

Question no.	Questions	Answers
1 (a)	How often did you use your device?	a)Daily b)5 days/week c)3–4 days/week d)1–2 days/week e)Rarely
1 (b)	During a day, how long did you use your device?	a)<30 minutes b)30–60 minutes c)1–2 hours d)2–4 hours e)>4 hours
1 (c)	How many weeks did you use your cooling device for?	a)<4 weeks b)4–12 weeks c)>12 weeks d)No response
2	How easy was it to use your cooling device?	a)Not easy b)Relatively easy c)Very easy d)No response
3	What bothered you about your cooling device, if anything?	Free Text
4	How would you improve the cooling device?	Free Text