Table 1

Subject demographics. Data are presented as mean ± SEM except for PC20 methacholine which are presented as the geometric means.

Characteristics
Allergic Asthmatic
Nonasthmatic Normal
P Value

Number:
31
17

Gender:
17 M/14 F
12 M/5 F

Age (yr): (range)
29.6 ± 1.3 (20 – 47)
27.1 ± 1.3 (21 – 33)
P = 0.22
Ragweed Skin Tests
Positive
Negative

FEV1 (L):
3.33 ± 0.2
4.06 ± 0.2
P = 0.005
FEV1 (% predicted):
84.8 ± 6
101.3 ± 3.7
P = 0.07
PC20 Methacholine (mg/ml):
1.0 ± 0.8
16 at > 32 mg/ml
1 at 11 mg/ml

Serum IgE (IU/ml):
177 ± 1
51 ± 13
P = 0.002

Hastie et al. Respiratory Research 2006 7:25   doi:10.1186/1465-9921-7-25