Data
614,426 items of data are available, covering 501,306 participants, encoded using Data-Coding
100343.
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
501,274 participants, 501,274 items
Instance 1 : First repeat assessment visit (2012-13)
20,328 participants, 20,328 items
Instance 2 : Imaging visit (2014+)
84,020 participants, 84,020 items
Instance 3 : First repeat imaging visit (2019+)
8,804 participants, 8,804 items
Notes
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.
|