During pregnancy, data was retrieved from the parents concerning reproductive and medical history, social structures, lifestyle and diet and smoking behavior of the parents before and during pregnancy. Clinical data concerning the pregnancy and delivery was collected through obstetricians, midwives and general practitioners.
Information after the birth of the child was collected through questionnaires for the parents concerning lifestyle, diet behavior, physical activity, biological factors, social factors, environmental influencers and illness.
Anthropometry measurements were done by Youth Health Care practitioners and provided data concerning weight, length, head-, hip- and waist circumference and blood pressure.
Additional measurements were done for subgroups of the participants of the cohort. These measurements could involve urine samples, blood samples, GWAS, methylation analyses of cord blood, and physical activity measurements with accelerometers.