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Table 2 The prevalences of different subtypes of asthma according to hereditary groups, the espoo cohort study 1991–2011, Finland

From: Allergic diseases and asthma in the family predict the persistence and onset-age of asthma: a prospective cohort study

 

Persistent asthma N (%)

Transient asthma N (%)

No asthma ever N (%)

Total

Early-onset N (%)

Late-onset N (%)

Total

134 (8.4)

86 (5.4)

1384 (86.3)

1604 (100.0)

 

88 (5.5)

46 (2.9)

   

No family history of asthma

73 (6.2)

57 (4.8)

1046 (88.9)

1176 (73.4)

 

42 (3.6)

31 (2.6)

   

No family history of allergic diseases

33 (5.2)

35 (5.5)

564 (89.2)

632 (39.4)

 

18 (2.8)

15 (2.4)

   

Any family history of asthma

61 (14.4)

29 (6.8)

335 (78.8)

425 (26.5)

 

46 (10.8)

15 (3.5)

   

Any family history of allergic diseases

100 (10.5)

50 (5.3)

800 (84.2)

950 (59.3)

 

70 (7.4)

30 (3.2)

   

Maternal asthma

20 (12.9)

12 (7.7)

123 (79.4)

155 (9.7)

 

17 (11.0)

3 (1.9)a

   

Maternal allergic diseases

40 (12.4)

22 (6.8)

260 (80.7)

322 (20.1)

 

28 (8.7)

12 (3.7)

   

Paternal asthma

15 (13.5)

5 (4.5)a

91 (82.0)

111 (6.9)

 

9 (8.1)

6 (5.4)

   

Paternal allergic diseases

17 (6.2)

15 (5.5)

243 (88.4)

275 (17.1)

 

13 (4.7)

4 (1.5)a

   

Both parents with asthma

8 (36.4)

2 (9.1)a

12 (54.5)

22 (1.4)

 

5 (22.7)

3 (13.6)a

   

Both parents with allergic diseases

21 (16.8)

6 (4.8)

98 (78.4)

125 (7.8)

 

14 (11.2)

7 (5.6)

   

Only siblings with asthma

18 (13.1)

10 (7.3)

109 (79.6)

137 (8.5)

 

15 (10.9)

3 (2.2)a

   

Only siblings with allergic diseases

22 (9.4)

7 (3.0)

206 (87.7)

235 (14.7)

 

15 (6.4)

7 (3.0)

   

Only parents with asthma

27 (11.8)

16 (7.0)

185 (81.1)

228 (14.2)

 

19 (8.3)

8 (3.5)

   

Only parents with allergic diseases

38 (8.6)

29 (6.5)

377 (84.9)

444 (27.7)

 

26 (5.9)

12 (2.7)

   

Both siblings and parents with asthma

16 (27.1)

3 (5.1)a

40 (67.8)

59 (3.7)

12 (20.3)

4 (6.8)a

   

Both siblings and parents with allergic diseases

40 (14.8)

14 (5.2)

217 (80.1)

271 (16.9)

29 (10.7)

11 (4.1)

   
  1. % is the percentage of people that represent the corresponding subtype of asthma divided by the total number of people that have the risk factor mentioned in that line (e.g. maternal asthma, paternal allergic diseases, total n in the group mentioned in the last column of the table).
  2. aRestricted amount of observations in the cell may lead to chance variation in the results.
  3. 19 people excluded from the analyses due to either asthma relapse (N = 11) or follow-up time of less than 5 years (N = 8).
  4. Missing information: 1 in parental asthma, 4 for siblings with asthma, 3 in parental allergic diseases, 22 in siblings with allergic diseases.
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Respiratory Research

ISSN: 1465-993X

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