Data
764,380 items of data are available, covering 498,672 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
497,449 participants, 617,719 items
Instance 1 : First repeat assessment visit (2012-13)
20,328 participants, 25,298 items
Instance 2 : Imaging visit (2014+)
89,817 participants, 106,492 items
Instance 3 : First repeat imaging visit (2019+)
12,658 participants, 14,871 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.