Table 5.

Summary of patient acceptability questionnaire responses (n=365, phase 2)

	Very easy/very comfortable	Easy/ comfortable	Difficult/ uncomfortable	Very difficult/ very uncomfortable	Not applicable
How easy was it to do the breath test? (%)	79	20	1	0	0
How comfortable were you while wearing the face mask? (%)	55	44	1	0	0
How did you find the experience of holding the device during the test? (%)	42	55	2	0	1
Would you be comfortable to do the breath test again, if recommended to by a doctor? (%)	64	35	0	0	1
	Took too long	Acceptable amount of time	Too quick	–	Not applicable
What did you think about the time it took to give a breath sample? (%)	2	95	3	–	0
	Strongly encourage	Encourage	Discourage	Strongly discourage	Not applicable
Would you encourage family and friends who were offered a breath test to complete it? (%)	59	39	0	0	2
Free text comments regarding overall sampling experience
‘Nothing to improve because there is nothing to it. It’s nice’ ‘I found the breath test to be extremely satisfactory, I am happy to participate in more research’ ‘I found it fine as it is. And, it was a rather nice experience. I liked it.’