379,373 items of data are available, covering 332,071 participants, encoded using Data-Coding 100352
Defined-instances run from 0 to 3, labelled using Instancing 2
: Initial assessment visit (2006-2010) at which participants were recruited and consent given
307,630 participants, 307,630 items
Instance 1 : First repeat assessment visit (2012-13)
20,327 participants, 20,327 items
Instance 2 : Imaging visit (2014+)
48,335 participants, 48,335 items
Instance 3 : First repeat imaging visit (2019+)
3,081 participants, 3,081 items
ACE touchscreen question "Do you use a hearing aid most of the time?"
Initially this information was collected from all participants answering Yes to either Field 2247 (Field 10793 in the pilot) or Field 2257. When the speech-in-noise hearing test was introduced (2009), program logic was altered so that the information was collected from all participants except those who indicated they were completely deaf, as defined by their answers to Field 2247.
There are no tabulations involving field 3393.
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