: Data-Field 1200

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Data

575,018 items of data are available, covering 501,586 participants, encoded using Data-Coding 100343.
Defined-instances run from 0 to 3, labelled using Instancing 2.

Graph illustrating main data

Counts of participants/items last updated 30 Oct 2020.

4 Instances

Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
501,569 participants, 501,569 items
Graph illustrating main data

Instance 1 : First repeat assessment visit (2012-13)
20,335 participants, 20,335 items
Graph illustrating main data

Instance 2 : Imaging visit (2014+)
48,639 participants, 48,639 items
Graph illustrating main data

Instance 3 : First repeat imaging visit (2019+)
4,475 participants, 4,475 items
Graph illustrating main data

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.

5 Categories

Category ID	Description	Items
100000	Assessment Centre	+2145
704	Lifestyle	461
100050	Lifestyle and environment	+158
100057	Sleep	7
100025	Touchscreen	+403

0 Related Data-Fields

There are no related data-fields

2 Resources

Preview	Name	Res ID
	Screenshot from touchscreen questionnaire used to capture field 1200	100288
	Touchscreen questionnaire ordering, validation and dependencies	113241