565,657 items of data are available, covering 501,649 participants, encoded using Data-Coding 100346
Defined-instances run from 0 to 3, labelled using Instancing 2
: Initial assessment visit (2006-2010) at which participants were recruited and consent given
501,633 participants, 501,633 items
Instance 1 : First repeat assessment visit (2012-13)
20,337 participants, 20,337 items
Instance 2 : Imaging visit (2014+)
42,861 participants, 42,861 items
Instance 3 : First repeat imaging visit (2018+)
826 participants, 826 items
ACE touchscreen question "How likely are you to doze off or fall asleep during the daytime when you don't mean to? (e.g. when working, reading or driving)"
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.|
There are no tabulations involving field 1220.
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