Data
254,863 items of data are available, covering 217,080 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
164,594 participants, 164,594 items
Instance 1 : First repeat assessment visit (2012-13)
20,037 participants, 20,037 items
Instance 2 : Imaging visit (2014+)
64,576 participants, 64,576 items
Instance 3 : First repeat imaging visit (2019+)
5,656 participants, 5,656 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.