574,783 items of data are available, covering 501,378 participants, encoded using Data-Coding 100334
Defined-instances run from 0 to 3, labelled using Instancing 2
: Initial assessment visit (2006-2010) at which participants were recruited and consent given
501,334 participants, 501,334 items
Instance 1 : First repeat assessment visit (2012-13)
20,335 participants, 20,335 items
Instance 2 : Imaging visit (2014+)
48,639 participants, 48,639 items
Instance 3 : First repeat imaging visit (2019+)
4,475 participants, 4,475 items
ACE touchscreen question "How often do you drive faster than the speed limit on the motorway?"
If the participant activated the Help button they were shown the message:
|If you are unsure, please provide an estimate or select Do not know.|
At the time of asking (2006) the UK motorway speed limit was 70miles/hour.