Table 1 Patient characteristics

No.

4

11

Sex (male/female)

4/0

9/2

Age (y)

45(40–50)

43(37-50)

Atopy

no

yes

FEV1 (% predicted)

108.3(103.8-11.2)

94(83.1-110.7)

FEV1/FVC ratio

79.6(75.1-80.3)

76.2(70.8-86.7)

Metacholine PC₂₀

n.d.

1.5(0.9-5.7)

Allergen (BU/ml)

100

62.5(62.5-125)

IgE (U/ml)

23(9.5-68)

173(97–262)