Data
597,638 items of data are available, covering 501,460 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
501,433 participants, 501,433 items
Instance 1 : First repeat assessment visit (2012-13)
20,334 participants, 20,334 items
Instance 2 : Imaging visit (2014+)
69,873 participants, 69,873 items
Instance 3 : First repeat imaging visit (2019+)
5,998 participants, 5,998 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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