Data
147,186 items of data are available, covering 124,956 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
120,894 participants, 120,894 items
Instance 1 : First repeat assessment visit (2012-13)
5,066 participants, 5,066 items
Instance 2 : Imaging visit (2014+)
19,291 participants, 19,291 items
Instance 3 : First repeat imaging visit (2019+)
1,935 participants, 1,935 items
Notes
ACE touchscreen question "What type of tobacco did you usually smoke?"
If the participant activated the Help button they were shown the message:
If you smoked both hand-rolled and manufactured cigarettes select the one that you smoked more of.
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Field 2877 was collected from participants who indicated that in the past they smoked on most or all days, as defined by their answers to Field 1249