Data
525,646 items of data are available, covering 494,123 participants, encoded using Data-Coding
100349.
Defined-instances run from 0 to 2, labelled using Instancing
2.
3 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
494,100 participants, 494,100 items
Instance 1 : First repeat assessment visit (2012-13)
20,067 participants, 20,067 items
Instance 2 : Imaging visit (2014+)
11,479 participants, 11,479 items
Notes
ACE touchscreen question "Did your mother smoke regularly around the time when you were born?"
Field 1787 was collected from all participants except those who indicated they were adopted as a child, as defined by their answers to Field 1767
This question was dropped from the touchscreen protocol on 24/10/2016.