Data
23,012 items of data are available, covering 17,191 participants, encoded using Data-Coding
100361.
Defined-instances run from 0 to 3, labelled using Instancing
2.
Array indices run from 0 to 3.
4 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
16,753 participants, 21,794 items
Instance 1 : First repeat assessment visit (2012-13)
320 participants, 450 items
Instance 2 : Imaging visit (2014+)
538 participants, 722 items
Instance 3 : First repeat imaging visit (2019+)
31 participants, 46 items
Notes
ACE touchscreen question "Why did you reduce your smoking? (You can select more than one answer)"
The following checks were performed:
- If code -7 was selected, then no additional choices were allowed.
- If code -1 was selected, then no additional choices were allowed.
- If code -3 was selected, then no additional choices were allowed.
Field 6158 was collected from participants who indicated they currently smoke tobacco on most or all days, as defined by their answers to Field 1239 and those who smoke less nowadays than 10 years ago, as defined by their answers to Field 1239