Data
601,172 items of data are available, covering 464,715 participants, encoded using Data-Coding
100348.
Defined-instances run from 0 to 3, labelled using Instancing
2.
4 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
461,839 participants, 461,839 items
Instance 1 : First repeat assessment visit (2012-13)
19,667 participants, 19,667 items
Instance 2 : Imaging visit (2014+)
98,995 participants, 98,995 items
Instance 3 : First repeat imaging visit (2019+)
20,671 participants, 20,671 items
Notes
ACE touchscreen question "In the past, how often have you smoked tobacco?"
Field 1249 was collected from all participants except those who indicated they currently smoke on most or all days, as defined by their answers to Field 1239