Data
610,631 items of data are available, covering 498,697 participants, encoded using Data-Coding
100631.
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
497,479 participants, 497,479 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 any difficulty with your hearing?"
The option to identify oneself as completely deaf was added in 2009 alongside the introduction of the speech-in-noise test.