Data
1,145,929 items of data are available, covering 498,734 participants, encoded using Data-Coding
100305.
Defined-instances run from 0 to 3, labelled using Instancing
2.
Array indices run from 0 to 5.
4 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
497,512 participants, 900,767 items
Instance 1 : First repeat assessment visit (2012-13)
20,328 participants, 42,818 items
Instance 2 : Imaging visit (2014+)
89,817 participants, 176,582 items
Instance 3 : First repeat imaging visit (2019+)
12,658 participants, 25,762 items
Notes
ACE touchscreen question "Which of the following qualifications do you have? (You can select more than one)"
The following checks were performed:
- If code -7 was selected, then no additional choices were allowed.
- If code -3 was selected, then no additional choices were allowed.
If the participant activated the Help button they were shown the message:
A levels/AS levels and equivalent includes the Higher School Certificate
O levels/GCSEs and equivalent includes the School Certificate.
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