914,311 items of data are available, covering 501,462 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
501,433 participants, 774,823 items
Instance 1 : First repeat assessment visit (2012-13)
20,333 participants, 28,023 items
Instance 2 : Imaging visit (2014+)
75,333 participants, 102,158 items
Instance 3 : First repeat imaging visit (2019+)
6,946 participants, 9,307 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.