Data
279,259 items of data are available, covering 228,633 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
164,530 participants, 164,530 items
Instance 1 : First repeat assessment visit (2012-13)
20,031 participants, 20,031 items
Instance 2 : Imaging visit (2014+)
82,711 participants, 82,711 items
Instance 3 : First repeat imaging visit (2019+)
11,987 participants, 11,987 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.