Table 16.

Summary of Peak Pressure Drop Analyses

	Healthy adults (n = 10)	Children with asthma ages 4–7 years (n = 20)	Children with asthma ages 8–11 years (n = 20)	Adults with asthma (n = 14)	Adults with severe COPD (n = 14)
Pressure drop (kPa)
Mean
Inhub
n	10	20	20	14	14
Mean (SD)	9.14 (1.58)	3.27 (1.40)	7.05 (1.62)	6.90 (1.75)	5.93 (1.13)
Diskus
n	10	20	20	14	14
Mean (SD)	8.58 (1.33)	2.78 (1.23)	5.99 (1.13)	6.30 (1.67)	5.39 (0.99)
Pressure drop (kPa)
Best of 3
Inhub
n	10	20	20	14	14
Mean (SD)	9.62 (1.55)	3.58 (1.42)	7.69 (1.50)	7.22 (1.79)	6.15 (1.20)
Diskus
n	10	20	20	14	14
Mean (SD)	9.06 (1.31)	3.18 (1.33)	6.53 (1.15)	6.73 (1.75)	5.73 (1.03)