Table 7 The participants’ medical history and results from the initial medical examinations before commencement of the study

Age (median, min–max)

29 (20–55)

Female (N, %)

9 (47%)

Previous smoker (N, %)*

7 (37%)

Medical history

History of any symptoms last 12 months (N, %)

7 (37%)

 Eye symptoms (N, %)

1 (5%)

 Nasal symptoms (N, %)

3 (16%)

 Dry cough (N, %)

0

History of chronic bronchitis symptoms (N, %)

0

History of bronchial hyperreactivity symptoms (N, %)

5 (26%)

History of childhood atopy

Atopic dermatitis/Childhood eczema (N, %)

3 (16%)

Allergic rhinitis/Hay fever (N, %)

1 (5%)

Urticaria (N, %)

1 (5%)

Physician-diagnosed asthma during childhood (N, %)

1 (5%)

Atopy

Phadiatop positive (N, %)

7 (37%)

Baseline spirometry (prior to bronchodilation)

FVC % pred. (median, min–max)

92 (70–106)

FEV₁% pred. (median, min–max)

94 (73–108)

FEV₁/FVC % pred. (median, min–max)

100 (90–108)

Baseline spirometry (after bronchodilation)

FVC % pred. (median, min–max)

95 (72–107)

FEV₁% pred. (median, min–max)

97 (79–109)

FEV₁/FVC % pred. (median, min–max)

100 (90–112)