533,512 items of data are available, covering 501,517 participants, encoded using Data-Coding 100420
Defined-instances run from 0 to 2, labelled using Instancing 2
: Initial assessment visit (2006-2010) at which participants were recruited and consent given
501,511 participants, 501,511 items
Instance 1 : First repeat assessment visit (2012-13)
20,334 participants, 20,334 items
Instance 2 : Imaging visit (2014+)
11,667 participants, 11,667 items
ACE touchscreen question "Where were you born?"
Participants who indicated they were born inside the United Kingdom were asked during the verbal interview in what area they had been born (Field 129 and Field 130).
Participants who indicated they were born outside the United Kingdom and Republic of Ireland were asked during the verbal interview in what country they had been born (Field 20115) and when they had immigrated (Field 3659).
This question was dropped from the touchscreen protocol on 24/10/2016.