Table 1.

The results of pulmonary function test in patients with cystic fibrosis.

FEV1		Frequency	Valid Percent
	<40%	7	36.8%
	40%-59%	5	26.3%
	60%-79%	6	31.6%
	>80%	1	5.3%
Missing		4
Total		23

FEV1 (forced expiratory volume in one second)