Table 3.

Spirometry Results

Characteristics	NormalSpirometry (N = 32)	Abnormal Spirometry (N = 19)	p value *
	Mean (%)	Mean (%)
Change in FEV1 (L)	4.09	10.93	<0.001
Change in FEF25-75 (L/sec)	12.51	25.43	NS
Positive Bronchodilator Response	N (% of Patients)	N (% of Patients)
FEV1 % > 12 % and 200ml increase in FVC or FEV1	4 (12.5)	6(31.5)	NS
FEF25-75% > 15%	14(43.7)	9(47.3)	NS
FEV1 – Forced Expiratory Volume in 1 second, FEF25-75% - Forced Expiratory Flow during the middle half of the FVC * The p value for each row were compared with a t test.