Amsterdam Born Children and their Development
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Phases

The ABCD study is a long-term cohort study, conducted in consecutive phases. Children are followed from the uterus until their early adulthood; at certain moments during this period their health and development are measured.

Data on the first (pregnancy), second (birth and infancy), third phase (preschool age) and fourth phase (teenagers) have been collected. Phase 5 will start in 2019. In this phase ABCD-children, their mothers and fathers will be asked to fill out a online-questionnaire. More information about the new questionnaires will be announched shortly.

tijdbalk ABCD-studie