576,090 items of data are available, covering 501,526 participants, encoded using Data-Coding 100484
Defined-instances run from 0 to 3, labelled using Instancing 2
: Initial assessment visit (2006-2010) at which participants were recruited and consent given
501,509 participants, 501,509 items
Instance 1 : First repeat assessment visit (2012-13)
20,334 participants, 20,334 items
Instance 2 : Imaging visit (2014+)
49,033 participants, 49,033 items
Instance 3 : First repeat imaging visit (2019+)
5,214 participants, 5,214 items
ACE touchscreen question "Over the past two weeks, how often have you felt tired or had little energy?"
If the participant activated the Help button they were shown the message:
|Answer this question thinking about the past 2 weeks.|
If you are unsure, please provide an estimate or select Do not know.