943,914 items of data are available, covering 496,842 participants, encoded using Data-Coding 100299
Defined-instances run from 0 to 3, labelled using Instancing 2
Array indices run from 0 to 3.
: Initial assessment visit (2006-2010) at which participants were recruited and consent given
495,902 participants, 816,666 items
Instance 1 : First repeat assessment visit (2012-13)
20,277 participants, 34,197 items
Instance 2 : Imaging visit (2014+)
48,596 participants, 85,363 items
Instance 3 : First repeat imaging visit (2019+)
4,475 participants, 7,688 items
ACE touchscreen question "In the last 4 weeks, which forms of transport have you used most often to get about? (Not including any journeys to and from work; you can select more than one answer)"
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:
|Remember not to include journeys to and from work.|
Field 6162 was collected from all participants except those who indicated they were unable to walk, as defined by their answers to Field 864