Table 2

Baseline questionnaire data

Family and demographicFamily history of allergic disease (allergy, eczema, hay fever, asthma), maternal BCG vaccination, parent education, parent country of birth, ethnicity.
Household environmentSize, composition, smoking, pets, region (postal code).
Maternal prenatalAge, weight, height, prior pregnancies, vaccinations, smoking, antibiotics, vitamin D, probiotics other medications or supplements.
BirthMode of delivery*, birth site*, plurality*, birth complications, gestational age, weight, sex, antibiotics or other medications during labour.
  • *Required for stratification prior to randomisation.