54,138 items of data are available, covering 43,586 participants, encoded using Data-Coding 100498
Defined-instances run from 0 to 3, labelled using Instancing 2
Array indices run from 0 to 3.
: Initial assessment visit (2006-2010) at which participants were recruited and consent given
36,071 participants, 42,296 items
Instance 1 : First repeat assessment visit (2012-13)
2,910 participants, 3,440 items
Instance 2 : Imaging visit (2014+)
6,498 participants, 7,713 items
Instance 3 : First repeat imaging visit (2019+)
567 participants, 689 items
ACE touchscreen question "Please try to remember a period when you were in a "high" or "irritable" state and select which of the following apply."
Question was introduced part way through fieldwork in April 2009.
The following checks were performed:
- If code 15 was selected, then no additional choices were allowed.
- If code -7 was selected, then no additional choices were allowed.
Field 6156 was collected from participants who indicated they have had a period of at least two days when they were more high, excited or hyper than their normal self, or so irritable they shouted or started fights or arguments, as defined by their answers to Field 4642 and Field 4642