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Table 2 Basic characteristics of participants (%) by age group, sex and all subjects

From: Change in the symptom profile treated as asthma – two cross-sectional studies twenty years apart

 

Year

Age groups, years

P-value**

Sex

P-value***

All

20–24

25–29

30–34

35–39

40–44

Women

Men

Women

1993/94

51.7

49.6

51.3

53.6

53.4

0.372

a

a

a

51.7

2014/15

55.4

56.4

68.5*

62.6*

65.1*

0.031

a

a

a

62.2*

Non-smokers

1993/94

51.2

41.1

37.6

31.9

45.4

<0.001

54.6

29.2

<0.001

42.3

2014/15

57.4

49.2*

59.2*

52.9*

59.3*

0.404

63.8*

42.6*

<0.001

55.7*

Ex-smokers

1993/94

7.7

11.0

13.5

15.7

15.6

<0.001

11.2

12.7

0.261

12.0

2014/15

21.6*

25.4*

24.7*

24.6*

23.0*

0.950

20.9*

29.0*

0.004

24.0*

Current-smokers

1993/94

41.2

47.9

48.9

52.4

38.9

0.347

34.2

58.1

<0.001

45.7

2014/15

21.0*

25.4*

16.2*

22.5*

17.7*

0.273

15.3*

28.5*

<0.001

20.3*

  1. *p < 0.05 between surveys
  2. **Test for trend by age group
  3. ***Difference in prevalence between women and men
  4. aNot applicable