How are families picked to take part in the research?

Families are chosen at random from records of births held by government departments and agencies, who provided your name, address, and additional information about you to Generation New Era.

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Approval by special committees in each country is needed to allow this.

In England and Wales, this information was provided by NHS England, and approved by the NHS Health Research Authority's Confidentiality Advisory Group and NHS England's Independent Group Advising on the Release of Data.

In Scotland, this information was provided by the National Records of Scotland and Public Health Scotland, and approved by the NHS Scotland Public Benefit and Privacy Panel for Health and Social Care.