778,097 items of data are available, covering 501,525 participants, encoded using Data-Coding 100328
Defined-instances run from 0 to 3, labelled using Instancing 2
Array indices run from 0 to 4.
: Initial assessment visit (2006-2010) at which participants were recruited and consent given
501,505 participants, 657,266 items
Instance 1 : First repeat assessment visit (2012-13)
20,334 participants, 28,552 items
Instance 2 : Imaging visit (2014+)
60,817 participants, 85,070 items
Instance 3 : First repeat imaging visit (2019+)
5,274 participants, 7,209 items
ACE touchscreen question "Which of the following do you attend once a week or more often? (You can select more than one)"
The following checks were performed:
- If code -7 was selected, then no additional choices were allowed.
- If code -3 was selected, then no additional choices were allowed.
If the participant activated the Help button they were shown the message:
|If this varies, please think about activities in the last year.|