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72,669 items of data are available, covering 34,469 participants, encoded using Data-Coding 1208
Defined-instances run from 0 to 1, labelled using Instancing 2
Array indices run from 0 to 5.
: Initial assessment visit (2006-2010) at which participants were recruited and consent given
30,222 participants, 62,973 items
Instance 1 : First repeat assessment visit (2012-13)
4,558 participants, 9,696 items
This data field means the result is unreliable for the asymmetry index of the keratometry result taken at 6mm for the left eye
1 Related Data-Fields
|5143||6mm asymmetry index unreliable (right)||Current Field is the opposite-side complement to Field 5143|