Table 2.

Participant feedback on the VFD.

Do you think that the ventilation feedback device is beneficial? (n = 104)
	Yes	No	Unsure
Total	102 (98%)	1 (1%)	1 (1%)

Would you use the ventilation feedback device in practice? (n = 103)
	Never	Rarely	Sometimes	Most of the time	Always
Total	0	0	1 (1%)	14 (14%)	88 (85%)

Was the brief explanation sufficient to use the ventilation feedback device? (n = 103)
	Not enough	Sufficient	More than enough
Total	0	36 (35%)	67 (65%)

How did you find applying the feedback from the device in practice? (n = 104)
	Very difficult	Difficult	Neutral	Easy	Very easy
Total	0	0	4 (4%)	24 (23%)	76 (73%)