Associations of exposure to mite, cat, dog and food allergens, and passive smoking with parentally reported symptoms without group allocation
| Recurrent wheezing 0–2 yrs | Ever wheezing with awakening 0–2 yrs | Current# wheezing | Current# shortness of breath | |
| Breastfeeding¶ | 0.32 (0.19–0.56)+ | 0.35 (0.19–0.66)+ | 0.42 (0.18–0.97)+ | 0.61 (0.34–1.1) |
| Hypo-allergenic formula feeding¶ | 1.3 (0.72–2.3) | 0.72 (0.38–1.4) | 0.66 (0.27–1.6) | 0.95 (0.53–1.7) |
| Introduction of first solid foods <6 months | 1.1 (0.59–2.0) | 1.3 (0.63–2.7) | 1.4 (0.61–3.2) | 0.77 (0.41–1.46) |
| No maternal smoking | 0.49 (0.25–1.0)+ | 0.68 (0.29–1.6) | 0.38 (0.14–1.0)+ | 1.1 (0.52–2.5) |
| No paternal/partner smoking | 0.91 (0.46–1.8) | 0.65 (0.30–1.4) | 0.67 (0.28–1.6) | 0.65 (0.32–1.3) |
| Mite allergens below median | 0.78 (0.44–1.4) | 0.63 (0.32–1.2) | 0.30 (0.12–0.71)+ | 0.54 (0.29–1.0)+ |
| Cat allergen below median | 0.87 (0.48–1.6) | 0.66 (0.33–1.3) | 1.2 (0.54–2.6) | 0.75 (0.40–1.4) |
| Dog allergen below median | 1.4 (0.79–2.4) | 1.6 (0.81–3.0) | 1.2 (0.54–2.7) | 0.78 (0.42–1.4) |
Data are the results of the multiple logistic regression analysis and are presented as odds ratio (OR) (95% confidence interval). ORs are adjusted for the other listed exposures. #: at least one episode in the 4 weeks before the 2nd birthday; ¶: ever breastfed or hypo-allergenic bottle fed; +: significant effect.