Table 2 Laboratory tests results in the studied groups

Spirometry and bronchial responsiveness (expressed as mean ± SD)

FEV₁ (%)

81.3±13

95.8±8

<0.001^a

FVC (%)

79±13

89±7

<0.001^a

MEF₅₀ (%)

62±19

87±26

<0.001^a

Δ%FEV₁ (%)

6.8±12.3

3.6±5.9

0.3^a

Δ%MEF₅₀ (%)

31±32

19±17

0.15^a

FEV₁ < 80% predicted value

10 (45%)

0

0.001^b

Δ%FEV₁ >12%

4 (18%)

1 (5%)

0.3^b

FeNO (ppb)

Median (25^th-75^th percentile)

8 (8–13)

10 (8–14)

0.2^c

Normal (≤20 ppb)

22

15

0.02^b

Intermediate (20–35 ppb)

0

3

High (>35 ppb)

0

2

N=81

N=40

serum tIgE (kU/L)

Geometric mean (± SD)

32±4

56±4

0.002^a

High (>upper limit for age)

10 (12%)

12 (32%)

0.02^b

Others

Absolute eosinophil count per uL)

265±202

225±185

0.3^a

Positive SPT

8 (11%)

9 (24%)

0.09^b