Table 1.

Responses to Matched Pre- and Poststudy Ease of Use Questions

Question			Response						Marginal homogeneity	P value
When preparing for a treatment, how easy do you find your nebulizer to assemble?			I-neb AAD System
			Very difficult	Difficult	Acceptable	Easy	Very easy	Total
	Previous nebulizer	Very difficult	0	0	0	0	0	0
		Difficult	0	0	0	0	2	2
		Acceptable	0	0	1	6	15	22		0.0001
		Easy	0	1	5	7	16	29
		Very easy	0	0	1	4	10	15
		Total	0	1	7	17	43	68
After a treatment, how easy do you find your nebulizer to take apart?			I-neb AAD System
			Very difficult	Difficult	Acceptable	Easy	Very easy	Total
	Previous nebulizer	Very difficult	0	0	0	0	0	0
		Difficult	0	0	0	1	0	1
		Acceptable	0	0	1	6	11	18		<0.0001
		Easy	0	0	3	9	21	33
		Very easy	0	0	0	4	12	16
		Total	0	0	4	20	44	68
How easy do you find your nebulizer to clean?			I-neb AAD System
			Very difficult	Difficult	Acceptable	Easy	Very easy	Total
	Previous nebulizer	Very difficult	0	0	0	0	0	0
		Difficult	0	0	0	0	2	2
		Acceptable	0	0	2	5	11	18		<0.0001
		Easy	0	0	4	10	27	41
		Very easy	0	0	0	1	6	7
		Total	0	0	6	16	46	68
When using your nebulizer, how confident are you that the drug was being delivered into your lungs?			I-neb AAD System
			Not at all	2	3	4	Very confident	Total
	Previous nebulizer	Not at all	0	0	1	0	2	3
		2	0	0	0	1	3	4
		3	1	0	0	5	13	19		0.001
		4	0	2	1	5	10	18
		Very confident	0	0	1	5	17	23
		Total	1	2	3	16	45	67

AAD, Adaptive Aerosol Delivery.