Table 1 Clinical characteristics of patients

Groups

Infancy (0–2 years old)

Pre-school children (2–5 years old)

School children (5–12 years old)

Age on first wheezing attack (years old)

0.42 (0.25–0.63)

1.63 (1–2.5)

4 (3–5.17)

Duration of symptoms (years)

0.33 (0.25–0.92)

1 (0.63–2)

2 (1–3)

Hospitalization times due to wheezing attack

2 (1–2)

2 (2–2.25)

3 (2–4)

FEV₁

 FEV₁ predicted (L)

1.69 (1.12–2.3)

 FEV₁ pre-treatment (L)

1.23 (0.8–1.38)

 FEV₁ pre-treatment (% predicted)

72.4 (67.3–76.1)

FEV₁/FVC ratio

 FEV₁/FVC ratio predicted

0.8512 (0.8438–0.8539)

 FEV₁/FVC ratio pre-treatment

0.7008 (0.6828–0.7059)

 FEV₁/FVC ratio pre-treatment (% predicted)

81.7 (80.1–83.4)

In vitro allergen test

Various allergens are confirmed such as soybean, mite collection, codfish, lobster, fan-shell, shrimp and house dust.