Prevalence of selected health outcomes at 4 yrs of age in the full cohort and of sensitisation to specific allergens based on immunoglobulin(Ig)E measurement in a cohort subset
| Variable | Subjects | Prevalence % |
| Wheeze | 429 (3528) | 12.2 |
| Doctor-diagnosed asthma | 144 (3533) | 4.1 |
| Dry cough at night with/without cold | 782 (3537) | 22.1 |
| Doctor-diagnosed bronchitis | 214 (3501) | 6.1 |
| Itchy rash | 906 (3537) | 25.6 |
| Doctor-diagnosed eczema | 503 (3518) | 14.3 |
| Ear/nose/throat infections | 1047 (3549) | 29.5 |
| Doctor-diagnosed flu, serious cold | 760 (3521) | 21.6 |
| Any positive sp IgE | 277 (713) | 38.8 |
| Any indoor positive sp IgE | 118 (713) | 16.5 |
| Cat allergen positive | 44 (708) | 6.2 |
| Dog allergen positive | 26 (706) | 3.7 |
| Dust mite allergen positive | 101 (713) | 14.2 |
| Any outdoor positive sp IgE | 57 (698) | 8.2 |
| Dactylium positive | 47 (698) | 6.7 |
| Birch positive | 16 (696) | 2.3 |
| Alternaria positive | 11 (680) | 1.7 |
| Any food positive sp IgE | 194 (689) | 28.1 |
| Milk allergen positive | 182 (689) | 26.4 |
| Egg allergen positive | 51 (681) | 7.5 |
| Total IgE >100 IU·mL−1 | 186 (713) | 26.1 |
Data for subjects are presented as number presenting with symptom, condition or positive IgE reaction to a specific allergen; with the total number of subjects, evaluated based on completion of a questionnaire at 4 yrs and allergy testing where applicable, given in parentheses. sp: Specific serum. All outcomes refer to incidence or diagnoses within the previous 12 months, the period between 3–4 yrs of age (see online supplementary material).