Data
525,435 items of data are available, covering 493,920 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
493,896 participants, 493,896 items
Instance 1 : First repeat assessment visit (2012-13)
20,062 participants, 20,062 items
Instance 2 : Imaging visit (2014+)
11,477 participants, 11,477 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.