Table 4.

Distribution of the test findings by diagnoses in the subjects in whom pulmonary function tests could be performed

	CVID n=25	IgG subgroup deficiencies n=19	p
FEV 1 median (min.–max.)	74.5 (19–124)	99 (74–122)	0.001
FVC median (min.–max.)	73.5 (48–127)	90 (63–125)	0.01
FEV 1/FVC median (min.–max.)	84.5 (30–117)	86 (84–111)	0.15
VC median (min.–max.)	74.5 (42–134)	88 (66–113)	0.06
FEF 25–75 median (min.–max.)	79 (5–140)	104 (83–175)	0.01

FEF 25–75: Forced expiratory flow at 25–75% of forced vital capacity; FEV1: Forced expiratory volume in 1 second; FVC: Forced vital capacity; Hyper IgM: Hyperimmunoglobulin M syndrome; VC: Vital capacity; CVID: Common variable immunodeficiency; XLA: X-linked agammaglobulinemia; Test: Mann-Whitney U test