|
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. |
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| 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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