138,557 items of data are available, covering 123,486 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
120,957 participants, 120,957 items
Instance 1 : First repeat assessment visit (2012-13)
5,067 participants, 5,067 items
Instance 2 : Imaging visit (2014+)
11,376 participants, 11,376 items
Instance 3 : First repeat imaging visit (2019+)
1,157 participants, 1,157 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