Data
624,021 items of data are available, covering 501,252 participants, encoded using Data-Coding
100603.
Defined-instances run from 0 to 3, labelled using Instancing
2.
4 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
501,218 participants, 501,218 items
Instance 1 : First repeat assessment visit (2012-13)
20,328 participants, 20,328 items
Instance 2 : Imaging visit (2014+)
89,817 participants, 89,817 items
Instance 3 : First repeat imaging visit (2019+)
12,658 participants, 12,658 items
Notes
ACE touchscreen question "Has a doctor ever told you that you have had any other serious medical conditions or disabilities?"
If the participant activated the Help button they were shown the message:
If you are not sure if you have a serious illness or you are not sure that you have had one of the conditions listed previously, enter Do not know and you will be asked about this by an interviewer later in this visit.
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