Data
271,450 items of data are available, covering 226,076 participants, encoded using Data-Coding
100643.
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
165,349 participants, 165,349 items
Instance 1 : First repeat assessment visit (2012-13)
20,104 participants, 20,104 items
Instance 2 : Imaging visit (2014+)
77,641 participants, 77,641 items
Instance 3 : First repeat imaging visit (2019+)
8,356 participants, 8,356 items
Notes
ACE touchscreen question "Add the following numbers together: 1 2 3 4 5 - is the answer?". Part 1 of Fluid Intelligence test.
Asked to choose from 13, 14, 15, 16 or 17.