Data
260,766 items of data are available, covering 220,133 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
164,593 participants, 164,593 items
Instance 1 : First repeat assessment visit (2012-13)
20,036 participants, 20,036 items
Instance 2 : Imaging visit (2014+)
69,572 participants, 69,572 items
Instance 3 : First repeat imaging visit (2019+)
6,565 participants, 6,565 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.