144,781 items of data are available, covering 124,630 participants, encoded using Data-Coding 100351
Defined-instances run from 0 to 3, labelled using Instancing 2
: Initial assessment visit (2006-2010) at which participants were recruited and consent given
120,941 participants, 120,941 items
Instance 1 : First repeat assessment visit (2012-13)
5,067 participants, 5,067 items
Instance 2 : Imaging visit (2014+)
17,226 participants, 17,226 items
Instance 3 : First repeat imaging visit (2019+)
1,547 participants, 1,547 items
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.
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