Skip to main content

Table 1 Demographic characteristics of the participants at baseline

From: Birch pollen, air pollution and their interactive effects on airway symptoms and peak expiratory flow in allergic asthma during pollen season – a panel study in Northern and Southern Sweden

Variables

Gothenburg

Umeå

Total

Subjects, N

22

15

37

Females, n (%)

12 (55%)

7 (47%)

19 (51%)

Males, n (%)

10 (45%)

8 (53%)

18 (49%)

Age, yr (mean ± SD)

44 ± 10

47 ± 13

48 ± 15

Height, cm (mean ± SD)

175 ± 9

172 ± 9

171 ± 8

Weight, kg (mean ± SD)

79 ± 18

78 ± 16

77 ± 15

Body mass index, kg/m2 (mean ± SD)

26 ± 4

26 ± 6

26 ± 5

Birch pollen allergy, n (%)

22 (100%)

15 (100%)

37 (100%)

Asthma Control Questionnaire (mean ± SD)

1.3 ± 1.1

1.3 ± 1.2

1.3 ± 1.1

Self-reported medication a

Short-acting bronchodilator, n (%)

18 (82%)

6 (40%)

24 (65%)

Long-acting medication, n (%)

2 (9%)

2 (13%)

4 (11%)

Inhalation steroids medication, n (%)

19 (86%)

6 (40%)

25 (68%)

Nasal steroid, n (%)

7 (32%)

2 (13%)

9 (24%)

Steroid medication (Inhalation and combination steroids), n (%)

19 (86%)

8 (53%)

27 (73%)

Allergy medicine, n (%)

22 (100%)

11 (73%)

33 (89%)

  1. Asthma control questionnaire score calculated as a mean of six questions about asthma symptoms in the last week
  2. aRegular usage in the last month or year