Data
597,807 items of data are available, covering 462,468 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
458,474 participants, 458,474 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 "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