Table 2.
Epidemiologic characteristics of infants hospitalized with bronchiolitis grouped according to severity (percentages are within groups)
| Epidemiologic characteristics | Group 0 (n = 193) | Group 1 (n = 53) | Group 2 (n = 48) | Group 3 (n = 16) | p |
|---|---|---|---|---|---|
| Maternal smoking (%) | 18.3 | 15.4 | 14.6 | 6.3 | ns |
| Smoking during pregnancy (%) | 5.9 | 5.8 | 4.2 | 0 | ns |
| Family asthma (%) | 22.8 | 22.6 | 16.7 | 31.3 | ns |
| Family atopy (%) | 29.0 | 34.0 | 31.3 | 31.3 | ns |
| Breastfeeding (months)* | 1.6 ± 1.7 | 1.3 ± 1.7 | 1.3 ± 1.4 | 0.9 ± 0.9 | ns |
| Atopic dermatitis (%) | 7.1 | 1.9 | 4.2 | 0 | ns |
p between groups.
*Mean ± SD.