Table 1.

Summary statistics of demographic and clinical variables for severe asthmatics, mild/moderate asthmatics, and normal controls

Demographic and Clinical Variables	Severe Asthmatics	Non-Severe Asthmatics	Normal Controls
Number of study subjects	60	34	26
Categorical Variables	Number (Percent)	Number (Percent)	Number (Percent)
Female gender	33 (55.0%)	20 (58.8%)	17 (65.4%)
Percent of Lung Less than −850 HU above median	37 (61.7%)	14 (41.2%)	9 (34.6%)
Atopic	46 (76.7%)	31(91.2%)	8 (30.8%)
Current Use of Oral Steroids	26 (43.3%)	0 (0%)	0 (0%)
Current Use of Inhaled Steroids	59 (98.3%)	18 (52.9%)	0 (0%)
Continuous Variables	Mean (Standard Deviation)	Mean (Standard Deviation)	Mean (Standard Deviation)
Age	37.5 (13.3)	34.3 (10.7)	30.3 (7.8)
Percent less −850	20.2 (16.7)	12.1 (12.0)	12.3 (16.7)
FEV1 percent predicted	62.7 (22.1)	79.7 (16.6)	99.7 (10.0)
FEV1/FVC (× 100)	62.6 (13.0)	70.1 (11.6)	84.9 (6.3)
IgE level	441.6 (694.8)	229.7 (295.0)	93.5 (171.5)