364,787 items of data are available, covering 327,879 participants, encoded using Data-Coding 100352
Defined-instances run from 0 to 2, labelled using Instancing 2
: Initial assessment visit (2006-2010) at which participants were recruited and consent given
307,652 participants, 307,652 items
Instance 1 : First repeat assessment visit (2012-13)
20,328 participants, 20,328 items
Instance 2 : Imaging visit (2014+)
36,807 participants, 36,807 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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