Data
787,223 items of data are available, covering 498,470 participants, encoded using Data-Coding
100630.
Defined-instances run from 0 to 3, labelled using Instancing
2.
Array indices run from 0 to 5.
4 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
497,239 participants, 617,455 items
Instance 1 : First repeat assessment visit (2012-13)
20,314 participants, 25,280 items
Instance 2 : Imaging visit (2014+)
100,917 participants, 119,783 items
Instance 3 : First repeat imaging visit (2019+)
20,920 participants, 24,705 items
Notes
ACE touchscreen question "Do you regularly take any of the following? (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.