Table 2. Comparison of mean lung function values between the asthma and control groups.^a .

Variable	Group		p*
	Asthma (n = 44)	Control (n = 44)
PIF, L/s	4.34 ± 0.87	4.86 ± 1.33	0.03
Volume, L	1.72 ± 0.65	1.78 ± 0.78	0.70
S-index	78.27 ± 15.21	87.10 ± 23.32	0.04
Time to PIF, s	0.20 ± 0.09	0.18 ± 0.11	0.85

PIF: peak inspiratory flow. ^aValues expressed as mean ± SD. *Student’s t-test.