Data
41,488 items of data are available, covering 39,619 participants, encoded using Data-Coding
100351.
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
39,227 participants, 39,227 items
Instance 1 : First repeat assessment visit (2012-13)
648 participants, 648 items
Instance 2 : Imaging visit (2014+)
1,526 participants, 1,526 items
Instance 3 : First repeat imaging visit (2019+)
87 participants, 87 items
Notes
ACE touchscreen question "What type of tobacco do you mainly smoke?"
If the participant activated the Help button they were shown the message:
If you smoke cigarettes and cigars and pipes, please select the type of cigarette you smoke. If you smoke both hand-rolled and manufactured cigarettes select the one that you smoke more of.
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Field 3446 was collected from participants who indicated they currently smoke tobacco on most or all days, as defined by their answers to Field 1239