Data
591,861 items of data are available, covering 501,295 participants, encoded using Data-Coding
100334.
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
501,243 participants, 501,243 items
Instance 1 : First repeat assessment visit (2012-13)
20,334 participants, 20,334 items
Instance 2 : Imaging visit (2014+)
64,924 participants, 64,924 items
Instance 3 : First repeat imaging visit (2019+)
5,360 participants, 5,360 items
Notes
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.
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At the time of asking (2006) the UK motorway speed limit was 70miles/hour.