DNBC Interviews 1 - 4

The four computer-assisted telephone interviews were carried out in gestational week 12 and 30 as well as when the child was 6 and 18 months old. Each interview lasted approx. 10-15 minutes.

Focus areas in the two pre-natal questionnaires

  • Earlier pregnancies and childbirths, IVF treatment
  • Health in general and during pregnancy as well as medical pregnancy examinations
  • Drug use
  • Work environment
  • Home environment
  • Diet - vitamins - dietary supplements
  • Use of alcohol and tobacco
  • Sleep
  • Exercise
  • Oestrogen
  • Socio-economic variables
  • Psycho-social stress

Focus areas in the two post-natal questionnaires

  • Child diet
  • Child development
  • Child vaccinations
  • Follow-up on pre-natal questions 

Code books for all four interviews

English version of code books for interviews 1 - 4

Danish version of code books for interviews 1 - 4

The interviews were carried out under DNBC supervision

The interviewer guides - ind Danish -  were drafted by DNBC supervisors in collaboration with the phoning companies.The guides contain guidelines for the interviewer for every question.