Data
578,953 items of data are available, covering 462,311 participants, encoded using Data-Coding
100370.
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
458,680 participants, 458,680 items
Instance 1 : First repeat assessment visit (2012-13)
19,681 participants, 19,681 items
Instance 2 : Imaging visit (2014+)
88,081 participants, 88,081 items
Instance 3 : First repeat imaging visit (2019+)
12,511 participants, 12,511 items
Notes
ACE touchscreen question "Does anyone in your household smoke?"
Field 1259 was collected from all participants except those who indicated they currently smoke tobacco on most or all days, as defined by their answers to Field 1239