Data
623,826 items of data are available, covering 501,092 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
501,023 participants, 501,023 items
Instance 1 : First repeat assessment visit (2012-13)
20,328 participants, 20,328 items
Instance 2 : Imaging visit (2014+)
89,817 participants, 89,817 items
Instance 3 : First repeat imaging visit (2019+)
12,658 participants, 12,658 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.