Data
239,241 items of data are available, covering 207,445 participants, encoded using Data-Coding
100646.
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
164,613 participants, 164,613 items
Instance 1 : First repeat assessment visit (2012-13)
20,037 participants, 20,037 items
Instance 2 : Imaging visit (2014+)
49,621 participants, 49,621 items
Instance 3 : First repeat imaging visit (2019+)
4,970 participants, 4,970 items
Notes
ACE touchscreen question "11 12 13 14 15 16 17 18 Divide the sixth number to the right of twelve by three. Is the answer?". Part 4 of Fluid Intelligence test.
Offered choice from 5, 6, 7, or 8.