892,218 items of data are available, covering 501,485 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
501,465 participants, 774,877 items
Instance 1 : First repeat assessment visit (2012-13)
20,334 participants, 28,024 items
Instance 2 : Imaging visit (2014+)
60,817 participants, 82,351 items
Instance 3 : First repeat imaging visit (2019+)
5,274 participants, 6,966 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.