878,969 items of data are available, covering 501,509 participants, encoded using Data-Coding 100553
Defined-instances run from 0 to 3, labelled using Instancing 2
Array indices run from 0 to 6.
: Initial assessment visit (2006-2010) at which participants were recruited and consent given
501,491 participants, 774,923 items
Instance 1 : First repeat assessment visit (2012-13)
20,334 participants, 28,024 items
Instance 2 : Imaging visit (2014+)
51,131 participants, 69,068 items
Instance 3 : First repeat imaging visit (2019+)
5,267 participants, 6,954 items
ACE touchscreen question "In the last month have you experienced any of the following that interfered with your usual activites? (You can select more than one answer)"
The following checks were performed:
- If code 8 was selected, then no additional choices were allowed.
- If code -7 was selected, then no additional choices were allowed.
- If code -3 was selected, then no additional choices were allowed.