Data
270,216 items of data are available, covering 225,047 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
164,534 participants, 164,534 items
Instance 1 : First repeat assessment visit (2012-13)
20,031 participants, 20,031 items
Instance 2 : Imaging visit (2014+)
77,307 participants, 77,307 items
Instance 3 : First repeat imaging visit (2019+)
8,344 participants, 8,344 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.