578,934 items of data are available, covering 498,738 participants, encoded using Data-Coding 100388
Defined-instances run from 0 to 3, labelled using Instancing 2
: Initial assessment visit (2006-2010) at which participants were recruited and consent given
497,742 participants, 497,742 items
Instance 1 : First repeat assessment visit (2012-13)
20,334 participants, 20,334 items
Instance 2 : Imaging visit (2014+)
55,584 participants, 55,584 items
Instance 3 : First repeat imaging visit (2019+)
5,274 participants, 5,274 items
ACE touchscreen question "What type of spread do you mainly use?"
If the participant activated the Help button they were shown the message:
|If you use more than one type of spread, please select the one that|
you use the most.
If you are unsure, select Do not know.