Table 1

Frequency for each variable at baseline and distribution of covariates, at baseline and during follow up, according to diagnosis of asthma at the end of follow up.

Covariates

Frequency (%)

Asthma

No-asthma

Chi square P value


Presence of allergic rhinitis

332 (76.2)

95%

65%

<0.0001

Female sex

199 (45.1)

57%

38%

<0.0001

Positive family history for allergic disorders

274 (62.8)

71%

58%

0.0085

Presence of pets in the home

149 (34.2)

45%

28%

0.0004

Parental smoking at home

178 (40.8)

63%

57%

0.17

Sensitization to Parietaria judaica

232 (53.2)

75%

41%

<0.0001

Sensitization to house dust mite

107 (24.5)

28%

23%

0.21

Sensitization to Olea europea

112 (25.7)

32%

22%

0.029

Sensitization to grass pollen

48 (11.0)

14%

10%

0.18

Sensitization to orchard

100 (22.9)

27%

20%

0.13

Sensitization to perennial rye

99 (22.7)

26%

22%

0.34

Sensitization to cat

34 (7.8)

9%

7%

0.37

Sensitization to cypressus

16 (3.7)

4%

3%

0.56

Sensitization to alternaria

18 (4.1)

4%

4%

0.75


Polosa et al. Respiratory Research 2005 6:153   doi:10.1186/1465-9921-6-153

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