572,258 items of data are available, covering 501,632 participants, encoded using Data-Coding 100343
Defined-instances run from 0 to 3, labelled using Instancing 2
: Initial assessment visit (2006-2010) at which participants were recruited and consent given
501,615 participants, 501,615 items
Instance 1 : First repeat assessment visit (2012-13)
20,336 participants, 20,336 items
Instance 2 : Imaging visit (2014+)
47,579 participants, 47,579 items
Instance 3 : First repeat imaging visit (2019+)
2,728 participants, 2,728 items
ACE touchscreen question "Do you have trouble falling asleep at night or do you wake up in the middle of the night?"
If the participant activated the Help button they were shown the message:
|If this varies a lot, answer this question in relation to the last 4 weeks.|
There are no tabulations involving field 1200.
Registered researchers may, when logged in, request that new analyses be generated and displayed here.