Table 3.

Satisfaction with inhaler attributes in performance and convenience domains

Domain and inhaler attribute	Respimat®SMI		Turbuhaler®		Difference, Respimat®−Turbuhaler®
	n	Mean (SD)	n	Mean (SD)	n	Mean (SD)	p value1
Performance domain
Overall feeling of inhaling the medicine	153	6.0 (1.3)	153	5.2 (1.6)	153	0.8 (2.0)	<0.0001
Feeling that the inhaled dose goes to the lungs	153	6.3 (1.2)	153	4.9 (1.8)	153	1.4 (2.0)	<0.0001
Can tell amount of medication left in container	153	6.0 (1.4)	153	4.7 (1.8)	153	1.3 (1.9)	<0.0001
Inhaler works reliably	153	6.4 (0.9)	153	5.5 (1.6)	153	1.0 (1.7)	<0.0001
Ease of inhaling a dose	153	6.3 (1.1)	152	5.7 (1.5)	152	0.7 (1.7)	<0.0001
Using the inhaler	151	6.3 (1.1)	151	5.7 (1.5)	151	0.6 (1.6)	<0.0001
Speed of medication coming out of inhaler	151	6.3 (1.1)	151	5.6 (1.5)	151	0.7 (1.8)	<0.0001
Convenience domain
Instructions for using the inhaler	152	6.1 (1.1)	152	6.0 (1.2)	152	0.1 (0.9)	0.0893
Size of the inhaler	153	5.7 (1.4)	153	5.9 (1.2)	153	−0.2 (0.9)	0.0045
Durability of the inhaler	153	6.3 (1.0)	153	6.1 (1.2)	153	0.2 (0.9)	0.0096
Ease of cleaning the inhaler	153	5.9 (1.1)	153	5.8 (1.2)	153	0.1 (0.8)	0.0881
Ease of holding inhaler during use	151	6.3 (1.0)	151	6.1 (1.0)	151	0.2 (1.0)	0.0064
Overall convenience of carrying inhaler	151	5.8 (1.3)	151	5.9 (1.2)	151	−0.1 (0.9)	0.2462
Overall satisfaction with inhaler	151	6.2 (1.1)	151	5.6 (1.6)	151	0.6 (1.7)	<0.0001

¹By paired t-test.

Abbreviations: SD, standard deviation; SMI, soft mist inhaler.