Data
692,100 items of data are available, covering 498,799 participants, encoded using Data-Coding
100629.
Defined-instances run from 0 to 3, labelled using Instancing
2.
Array indices run from 0 to 6.
4 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
497,653 participants, 569,696 items
Instance 1 : First repeat assessment visit (2012-13)
20,333 participants, 23,363 items
Instance 2 : Imaging visit (2014+)
75,333 participants, 90,650 items
Instance 3 : First repeat imaging visit (2019+)
6,946 participants, 8,391 items
Notes
ACE touchscreen question "Do you regularly take any of the following? (You can select more than one answer)"
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.